537
537 is a composite number, odd, a calendar year.
537 (five hundred thirty-seven) is an odd 3-digit number. It is a composite number with 4 divisors, and factors as 3 × 179. Written other ways, in Roman numerals it is DXXXVII and in binary, 1000011001.
Interestingness
Notable events — 537 AD
- Dec 27 The Hagia Sophia is dedicated in Constantinople.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Historical context — 537 BC
Calendar year
The year 537 BC was a year of the pre-Julian Roman calendar.
Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →
Year facts
- Year type
-
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
- Days in year
- 365
- ISO weeks
- 52
- Started on
-
Tuesday
January 1, 537
- Ended on
-
Tuesday
December 31, 537
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
530s
530–539
- Century
-
6th century
501–600
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,489
1489 years before 2026.
In other calendars
- Hebrew
-
4297 / 4298 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Fire zodiac:Snake
Sexagenary cycle position 54 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1080 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
529 / 530 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
459 / 458 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 3 × 179
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√537 = [23; (5, 1, 3, 2, 1, 1, 1, 2, 1, 14, 1, 2, 1, 1, 1, 2, 3, 1, 5, 46)]
Period length 20 — the block in parentheses repeats forever.
Representations
- In words
- five hundred thirty-seven
- Ordinal
- 537th
- Roman numeral
- DXXXVII
- Binary
- 1000011001
- Octal
- 1031
- Hexadecimal
- 0x219
- Base64
- Ahk=
- One's complement
- 64,998 (16-bit)
- Scientific notation
- 5.37 × 10²
- As a duration
- 537 s = 8 minutes, 57 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- φλζʹ
- Mayan (base 20)
- 𝋡·𝋦·𝋱
- Chinese
- 五百三十七
- Chinese (financial)
- 伍佰參拾柒
Digit at this position in famous constants
- π — Pi (π)
- Digit 537 = 2
- e — Euler's number (e)
- Digit 537 = 9
- φ — Golden ratio (φ)
- Digit 537 = 7
- √2 — Pythagoras's (√2)
- Digit 537 = 6
- ln 2 — Natural log of 2
- Digit 537 = 2
- γ — Euler-Mascheroni (γ)
- Digit 537 = 9
Also seen as
UTF-8 encoding: C8 99 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.25.
- Address
- 0.0.2.25
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.2.25
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Type 537 on a seven-segment calculator, flip it 180°, and the display reads:
LES
A staple of calculator humor since pocket calculators put digits in front of bored students.
Heard as a frequency, 537 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C5 (523.3 Hz, +45¢ — about midway to C♯5)
- Scientific pitch (C4 = 256 Hz): C♯5 (542.4 Hz, -17¢)
- Baroque pitch (A4 = 415 Hz): C♯5 (522.9 Hz, +46¢ — about midway to D5)
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.