52
52 is a composite number, even, a calendar year.
52 (fifty-two) is an even 2-digit number. It is a composite number with 6 divisors, and factors as 2² × 13. Written other ways, in Roman numerals it is LII and in binary, 110100.
Interestingness
Historical context — 52 AD
Calendar year
AD 52 (LII) was a leap year starting on Saturday of the Julian calendar.
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Historical context — 52 BC
Calendar year
Year 52 BC was a year of the pre-Julian Roman calendar.
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Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Monday
January 1, 52
- Ended on
-
Tuesday
December 31, 52
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
50s
50–59
- Century
-
1st century
1–100
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,974
1974 years before 2026.
In other calendars
- Hebrew
-
3812 / 3813 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Water zodiac:Rat
Sexagenary cycle position 49 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
595 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
44 / 45 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
-26 / -27 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 2 × 13
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√52 = [7; (4, 1, 2, 1, 4, 14)]
Period length 6 — the block in parentheses repeats forever.
Representations
- In words
- fifty-two
- Ordinal
- 52nd
- Roman numeral
- LII
- Binary
- 110100
- Octal
- 64
- Hexadecimal
- 0x34
- Base64
- NA==
- One's complement
- 203 (8-bit)
- Scientific notation
- 5.2 × 10¹
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- νβʹ
- Mayan (base 20)
- 𝋢·𝋬
- Chinese
- 五十二
- Chinese (financial)
- 伍拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 52 = 5
- e — Euler's number (e)
- Digit 52 = 9
- φ — Golden ratio (φ)
- Digit 52 = 2
- √2 — Pythagoras's (√2)
- Digit 52 = 8
- ln 2 — Natural log of 2
- Digit 52 = 5
- γ — Euler-Mascheroni (γ)
- Digit 52 = 3
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 52, here are decompositions:
- 5 + 47 = 52
- 11 + 41 = 52
- 23 + 29 = 52
As an ASCII codepoint, 52 is 4. Printable ASCII character 4.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.52.
- Address
- 0.0.0.52
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.0.52
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 52 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯1 (51.9 Hz, +3¢)
- Scientific pitch (C4 = 256 Hz): G♯1 (50.8 Hz, +41¢)
- Baroque pitch (A4 = 415 Hz): A1 (51.9 Hz, +4¢)
As a MIDI note number, 52 is E3 (164.8 Hz at concert pitch).
On the periodic table, atomic number 52 is Tellurium (Te) — period 5.
52 is the number of weeks in a year (a 365-day year is 52 weeks plus 1 day).
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.