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1,051,491

1,051,491 is a composite number, odd.

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.).

1,051,491 (one million fifty-one thousand four hundred ninety-one) is an odd 7-digit number. It is a composite number with 24 divisors, and factors as 3 × 7² × 23 × 311. Written other ways, in hexadecimal, 0x100B63.

Arithmetic Number Cube-Free Deficient Number Evil Number Harshad / Niven

Interestingness

Properties

Parity
Odd
Digit count
7
Digit sum
21
Digit product
0
Digital root
3
Palindrome
No
Bit width
21 bits
Reversed
1,941,501
Square (n²)
1,105,633,323,081
Cube (n³)
1,162,563,488,519,763,771
Divisor count
24
σ(n) — sum of divisors
1,707,264
φ(n) — Euler's totient
572,880
Sum of prime factors
351

Primality

Prime factorization: 3 × 7 2 × 23 × 311

Nearest primes: 1,051,481 (−10) · 1,051,499 (+8)

Divisors & multiples

All divisors (24)
1 · 3 · 7 · 21 · 23 · 49 · 69 · 147 · 161 · 311 · 483 · 933 · 1127 · 2177 · 3381 · 6531 · 7153 · 15239 · 21459 · 45717 · 50071 · 150213 · 350497 · 1051491
Aliquot sum (sum of proper divisors): 655,773
Factor pairs (a × b = 1,051,491)
1 × 1051491
3 × 350497
7 × 150213
21 × 50071
23 × 45717
49 × 21459
69 × 15239
147 × 7153
161 × 6531
311 × 3381
483 × 2177
933 × 1127
First multiples
1,051,491 · 2,102,982 (double) · 3,154,473 · 4,205,964 · 5,257,455 · 6,308,946 · 7,360,437 · 8,411,928 · 9,463,419 · 10,514,910

Sums & aliquot sequence

As consecutive integers: 525,745 + 525,746 350,496 + 350,497 + 350,498 175,246 + 175,247 + 175,248 + 175,249 + 175,250 + 175,251 150,210 + 150,211 + … + 150,216
Aliquot sequence: 1,051,491 655,773 218,595 184,605 121,059 53,817 17,943 5,985 6,495 3,921 1,311 609 351 209 31 1 0 — terminates at zero

Continued fraction of √n

√1,051,491 = [1025; (2, 2, 1, 2, 1, 1, 3, 4, 2, 2, 13, 1, 13, 1, 13, 2, 2, 4, 3, 1, 1, 2, 1, 2, …)]

Period length 26 — the block in parentheses repeats forever.

Representations

In words
one million fifty-one thousand four hundred ninety-one
Ordinal
1051491st
Binary
100000000101101100011
Octal
4005543
Hexadecimal
0x100B63
Base64
EAtj
One's complement
4,293,915,804 (32-bit)
Scientific notation
1.051491 × 10⁶
As a duration
1,051,491 s = 12 days, 4 hours, 4 minutes, 51 seconds
In other bases
ternary (3) 1222102101010
quaternary (4) 10000231203
quinary (5) 232121431
senary (6) 34312003
septenary (7) 11636400
nonary (9) 1872333
undecimal (11) 659001
duodecimal (12) 428603
tridecimal (13) 2aa7ac
tetradecimal (14) 1d52a7
pentadecimal (15) 15b846

As an angle

1,051,491° = 2,920 × 360° + 291°
291° ≈ 5.079 rad
Compass bearing: WNW (west-northwest)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic
𓁨𓂍𓂍𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Chinese
一百零五萬一千四百九十一
Chinese (financial)
壹佰零伍萬壹仟肆佰玖拾壹
In other modern scripts
Eastern Arabic ١٠٥١٤٩١ Devanagari १०५१४९१ Bengali ১০৫১৪৯১ Tamil ௧௦௫௧௪௯௧ Thai ๑๐๕๑๔๙๑ Tibetan ༡༠༥༡༤༩༡ Khmer ១០៥១៤៩១ Lao ໑໐໕໑໔໙໑ Burmese ၁၀၅၁၄၉၁

Also seen as

Hex color
#100B63
RGB(16, 11, 99)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.16.11.99.

Address
0.16.11.99
Class
reserved
IPv4-mapped IPv6
::ffff:0.16.11.99

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

Possible date

Could be parsed as a date. Most likely interpretation: Monday, January 5, 1491 (MDDYYYY (US, single-digit month)).

Other possible interpretations (3)
  • 1491-05-01 (DMMYYYY (Euro, single-digit day))
  • 1491-10-05 (MMDYYYY (US, single-digit day))
  • 1491-05-10 (DDMYYYY (Euro, single-digit month))
Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 1,051,491 and was likely granted around 1912.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Position in π

The digit sequence 1051491 first appears in π at position 116,636 of the decimal expansion (the 116,636ordinal-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.

Related reading