37
37 is a prime, odd, a calendar year.
Historical context — 37 AD
Calendar year
AD 37 (XXXVII) was a common year starting on Tuesday of the Julian calendar.
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Historical context — 37 BC
Calendar year
Year 37 BC was either a common year starting on Monday, Tuesday or Wednesday or a leap year starting on Monday or Tuesday of the Julian calendar and a leap year starting on Monday of the Proleptic Julian calendar.
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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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 37
- Ended on
-
Thursday
December 31, 37
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
30s
30–39
- Century
-
1st century
1–100
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,989
1989 years before 2026.
In other calendars
- Hebrew
-
3797 / 3798 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Fire zodiac:Rooster
Sexagenary cycle position 34 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
580 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
29 / 30 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
-41 / -42 Saka
Indian national calendar; year starts in March.
Properties
Primality
37 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirty-seven
- Ordinal
- 37th
- Roman numeral
- XXXVII
- Binary
- 100101
- Octal
- 45
- Hexadecimal
- 0x25
- Base64
- JQ==
- One's complement
- 218 (8-bit)
- Scientific notation
- 3.7 × 10¹
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- λζʹ
- Mayan (base 20)
- 𝋡·𝋱
- Chinese
- 三十七
- Chinese (financial)
- 參拾柒
Digit at this position in famous constants
- π — Pi (π)
- Digit 37 = 4
- e — Euler's number (e)
- Digit 37 = 7
- φ — Golden ratio (φ)
- Digit 37 = 7
- √2 — Pythagoras's (√2)
- Digit 37 = 8
- ln 2 — Natural log of 2
- Digit 37 = 8
- γ — Euler-Mascheroni (γ)
- Digit 37 = 1
Also seen as
As an ASCII codepoint, 37 is %. Printable ASCII character %.
Code page 37 is EBCDIC US/Canada — IBM mainframe character encoding.
Code pages are integer identifiers used by Windows and other systems to refer to specific character encodings.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.37.
- Address
- 0.0.0.37
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.0.37
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Matches numbered highway designation:
- I-37 — Corpus Christi to San Antonio, TX.