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1,026,521

1,026,521 is a prime, 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.).

1,026,521 (one million twenty-six thousand five hundred twenty-one) is an odd 7-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xFA9D9.

Arithmetic Number Chen Prime Cube-Free Deficient Number Emirp Odious Number Pernicious Number Prime Pythagorean Prime Self Number Squarefree

Interestingness

Properties

Parity
Odd
Digit count
7
Digit sum
17
Digit product
0
Digital root
8
Palindrome
No
Bit width
20 bits
Reversed
1,256,201
Square (n²)
1,053,745,363,441
Cube (n³)
1,081,691,744,224,818,761
Divisor count
2
σ(n) — sum of divisors
1,026,522
φ(n) — Euler's totient
1,026,520

Primality

1,026,521 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 1026521
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 1,026,521)
1 × 1026521
First multiples
1,026,521 · 2,053,042 (double) · 3,079,563 · 4,106,084 · 5,132,605 · 6,159,126 · 7,185,647 · 8,212,168 · 9,238,689 · 10,265,210

Sums & aliquot sequence

As a sum of two squares: 220² + 989²
As consecutive integers: 513,260 + 513,261

Continued fraction of √n

√1,026,521 = [1013; (5, 1, 3, 9, 1, 6, 1, 2, 1, 9, 1, 3, 8, 4, 2, 46, 1, 2, 9, 11, 4, 1, 2, 4, …)]

Representations

In words
one million twenty-six thousand five hundred twenty-one
Ordinal
1026521st
Binary
11111010100111011001
Octal
3724731
Hexadecimal
0xFA9D9
Base64
D6nZ
One's complement
4,293,940,774 (32-bit)
Scientific notation
1.026521 × 10⁶
As a duration
1,026,521 s = 11 days, 21 hours, 8 minutes, 41 seconds
In other bases
ternary (3) 1221011010022
quaternary (4) 3322213121
quinary (5) 230322041
senary (6) 34000225
septenary (7) 11503526
nonary (9) 1834108
undecimal (11) 641271
duodecimal (12) 416075
tridecimal (13) 29c312
tetradecimal (14) 1ca14d
pentadecimal (15) 15424b

As an angle

1,026,521° = 2,851 × 360° + 161°
161° ≈ 2.81 rad
Compass bearing: SSE (south-southeast)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic
𓁨𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
Chinese
一百零二萬六千五百二十一
Chinese (financial)
壹佰零貳萬陸仟伍佰貳拾壹
In other modern scripts
Eastern Arabic ١٠٢٦٥٢١ Devanagari १०२६५२१ Bengali ১০২৬৫২১ Tamil ௧௦௨௬௫௨௧ Thai ๑๐๒๖๕๒๑ Tibetan ༡༠༢༦༥༢༡ Khmer ១០២៦៥២១ Lao ໑໐໒໖໕໒໑ Burmese ၁၀၂၆၅၂၁

Also seen as

Prime neighborhood

Adjacent primes:

Hex color
#0FA9D9
RGB(15, 169, 217)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.169.217.

Address
0.15.169.217
Class
reserved
IPv4-mapped IPv6
::ffff:0.15.169.217

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

Possible date

Could be parsed as a date. Most likely interpretation: Thursday, January 2, 6521 (MDDYYYY (US, single-digit month)).

Other possible interpretations (3)
  • 6521-02-01 (DMMYYYY (Euro, single-digit day))
  • 6521-10-02 (MMDYYYY (US, single-digit day))
  • 6521-02-10 (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 1,026,521 and was likely granted around 1912.

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

Related reading

  • Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
  • Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.