1,572
1,572 is a composite number, even, a calendar year.
Notable events — 1572 AD
- Aug 24 The St. Bartholomew's Day Massacre slaughters thousands of French Huguenots.
- Apr 1 The Sea Beggars seize Brielle, igniting the Dutch revolt.
- Nov 11 Tycho Brahe observes a supernova in Cassiopeia.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
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
-
Saturday
January 1, 1572
- Ended on
-
Sunday
December 31, 1572
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1570s
1570–1579
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
454
454 years before 2026.
In other calendars
- Hebrew
-
5332 / 5333 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
979 / 980 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Monkey
Sexagenary cycle position 9 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2115 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
950 / 951 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1564 / 1565 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1494 / 1493 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 15
- Digit product
- 70
- Digital root
- 6
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 2,751
- Recamán's sequence
- a(1,372) = 1,572
- Square (n²)
- 2,471,184
- Cube (n³)
- 3,884,701,248
- Divisor count
- 12
- σ(n) — sum of divisors
- 3,696
- φ(n) — Euler's totient
- 520
- Sum of prime factors
- 138
Primality
Prime factorization: 2 2 × 3 × 131
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand five hundred seventy-two
- Ordinal
- 1572nd
- Roman numeral
- MDLXXII
- Binary
- 11000100100
- Octal
- 3044
- Hexadecimal
- 0x624
- Base64
- BiQ=
- One's complement
- 63,963 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵αφοβʹ
- Mayan (base 20)
- 𝋣·𝋲·𝋬
- Chinese
- 一千五百七十二
- Chinese (financial)
- 壹仟伍佰柒拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,572 = 5
- e — Euler's number (e)
- Digit 1,572 = 0
- φ — Golden ratio (φ)
- Digit 1,572 = 2
- √2 — Pythagoras's (√2)
- Digit 1,572 = 2
- ln 2 — Natural log of 2
- Digit 1,572 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,572 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1572, here are decompositions:
- 5 + 1567 = 1572
- 13 + 1559 = 1572
- 19 + 1553 = 1572
- 23 + 1549 = 1572
- 29 + 1543 = 1572
- 41 + 1531 = 1572
- 61 + 1511 = 1572
- 73 + 1499 = 1572
Showing the first eight; more decompositions exist.
UTF-8 encoding: D8 A4 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.36.
- Address
- 0.0.6.36
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.36
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1572 first appears in π at position 5,669 of the decimal expansion (the 5,669ordinal-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.