Live analysis

55,840

55,840 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

55,840 (fifty-five thousand eight hundred forty) is an even 5-digit number. It is a composite number with 24 divisors, and factors as 2⁵ × 5 × 349. Its proper divisors sum to 76,460, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xDA20.

Abundant Number Evil Number Happy Number Practical Number Recamán's Sequence Semiperfect Number

Interestingness

★ ★ ☆ ☆ ☆

4 notable facts · grade D

55,828 55,829 55,830 55,831 55,832 55,833 55,834 55,835 55,836 55,837 55,838 55,839 55,840 55,841 55,842 55,843 55,844 55,845 55,846 55,847 55,848 55,849 55,850 55,851 55,852

less more

Properties

Parity: Even
Digit count: 5
Digit sum: 22
Digit product: 0
Digital root: 4
Palindrome: No
Bit width: 16 bits
Reversed: 4,855
Recamán's sequence: a(292,140) = 55,840
Square (n²): 3,118,105,600
Cube (n³): 174,115,016,704,000
Divisor count: 24
σ(n) — sum of divisors: 132,300
φ(n) — Euler's totient: 22,272
Sum of prime factors: 364

Primality

Prime factorization: 2 ⁵ × 5 × 349

Nearest primes: 55,837 (−3) · 55,843 (+3)

Divisors & multiples

All divisors (24)

1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 32 · 40 · 80 · 160 · 349 · 698 · 1396 · 1745 · 2792 · 3490 · 5584 · 6980 · 11168 · 13960 · 27920 (half) · 55840

Aliquot sum (sum of proper divisors): 76,460

Factor pairs (a × b = 55,840)

1 × 55840

2 × 27920

4 × 13960

5 × 11168

8 × 6980

10 × 5584

16 × 3490

20 × 2792

32 × 1745

40 × 1396

80 × 698

160 × 349

First multiples

55,840 · 111,680 (double) · 167,520 · 223,360 · 279,200 · 335,040 · 390,880 · 446,720 · 502,560 · 558,400

Sums & aliquot sequence

As a sum of two squares: 12² + 236² = 132² + 196²

As consecutive integers: 11,166 + 11,167 + 11,168 + 11,169 + 11,170 841 + 842 + … + 904 15 + 16 + … + 334

Aliquot sequence: 55,840 → 76,460 → 84,148 → 65,232 → 123,248 → 115,576 → 101,144 → 93,256 → 81,614 → 55,138 → 31,982 → 15,994 → 10,214 → 5,110 → 5,546 → 3,094 → 2,954 — unresolved within range

Continued fraction of √n

√55,840 = [236; (3, 3, 1, 1, 2, 1, 14, 1, 1, 9, 7, 1, 3, 2, 1, 1, 1, 1, 1, 12, 1, 1, 29, 52, …)]

Representations

In words: fifty-five thousand eight hundred forty
Ordinal: 55840th
Binary: 1101101000100000
Octal: 155040
Hexadecimal: 0xDA20
Base64: 2iA=
One's complement: 9,695 (16-bit)
Scientific notation: 5.584 × 10⁴
As a duration: 55,840 s = 15 hours, 30 minutes, 40 seconds

In other bases

ternary (3) 2211121011

quaternary (4) 31220200

quinary (5) 3241330

senary (6) 1110304

septenary (7) 321541

nonary (9) 84534

undecimal (11) 38a54

duodecimal (12) 28394

tridecimal (13) 1c555

tetradecimal (14) 164c8

pentadecimal (15) 1182a

As an angle

55,840° = 155 × 360° + 40°

40° ≈ 0.698 rad

Compass bearing: NE (northeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋𒌋𒌋
Egyptian hieroglyphic: 𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
Greek (Milesian): ͵νεωμʹ
Mayan (base 20): 𝋦·𝋳·𝋬·𝋠
Chinese: 五萬五千八百四十
Chinese (financial): 伍萬伍仟捌佰肆拾

In other modern scripts

Eastern Arabic ٥٥٨٤٠ Devanagari ५५८४० Bengali ৫৫৮৪০ Tamil ௫௫௮௪௦ Thai ๕๕๘๔๐ Tibetan ༥༥༨༤༠ Khmer ៥៥៨៤០ Lao ໕໕໘໔໐ Burmese ၅၅၈၄၀

Digit at this position in famous constants

π — Pi (π): Digit 55,840 = 1
e — Euler's number (e): Digit 55,840 = 9
φ — Golden ratio (φ): Digit 55,840 = 6
√2 — Pythagoras's (√2): Digit 55,840 = 4
ln 2 — Natural log of 2: Digit 55,840 = 1
γ — Euler-Mascheroni (γ): Digit 55,840 = 6

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 55840, here are decompositions:

3 + 55837 = 55840
11 + 55829 = 55840
17 + 55823 = 55840
23 + 55817 = 55840
41 + 55799 = 55840
47 + 55793 = 55840
53 + 55787 = 55840
107 + 55733 = 55840

Showing the first eight; more decompositions exist.

Hex color

#00DA20

RGB(0, 218, 32)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.218.32.

Address: 0.0.218.32
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.218.32

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 55840 first appears in π at position 81,496 of the decimal expansion (the 81,496ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 55840 on Pi Search ↗