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

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

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)
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

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.