Number

1,573

1,573 is a composite number, odd, a calendar year.

Deficient Number Gapful Number Odious Number Pernicious Number Recamán's Sequence Year

Notable events — 1573 AD

Aug 14 Henry of Anjou is elected King of Poland.
Apr 30 Charles IX issues the Edict of Boulogne to end the fourth War of Religion.
Undated Spain abandons the Adriatic claim, the seafaring Republic of Venice consolidates.

Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0

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: Monday
January 1, 1573
Ended on: Monday
December 31, 1573
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 1570s
1570–1579
Century: 16th century
1501–1600
Millennium: 2nd millennium
1001–2000
Years ago: 453
453 years before 2026.

In other calendars

Hebrew: 5333 / 5334 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 980 / 981 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Water zodiac:Rooster
Sexagenary cycle position 10 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 2116 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 951 / 952 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1565 / 1566 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1495 / 1494 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 4
Digit sum: 16
Digit product: 105
Digital root: 7
Palindrome: No
Bit width: 11 bits
Reversed: 3,751
Recamán's sequence: a(1,374) = 1,573
Square (n²): 2,474,329
Cube (n³): 3,892,119,517
Divisor count: 6
σ(n) — sum of divisors: 1,862
φ(n) — Euler's totient: 1,320
Sum of prime factors: 35

Primality

Prime factorization: 11 ² × 13

Nearest primes: 1,571 (−2) · 1,579 (+6)

Divisors & multiples

All divisors (6)

1 · 11 · 13 · 121 · 143 · 1573

Aliquot sum (sum of proper divisors): 289

Factor pairs (a × b = 1,573)

1 × 1573

11 × 143

13 × 121

First multiples

1,573 · 3,146 (double) · 4,719 · 6,292 · 7,865 · 9,438 · 11,011 · 12,584 · 14,157 · 15,730

Sums & aliquot sequence

As a sum of two squares: 22² + 33²

As consecutive integers: 786 + 787 138 + 139 + … + 148 115 + 116 + … + 127 61 + 62 + … + 82

Aliquot sequence: 1,573 → 289 → 18 → 21 → 11 → 1 → 0 — terminates at zero

Representations

In words: one thousand five hundred seventy-three
Ordinal: 1573rd
Roman numeral: MDLXXIII
Binary: 11000100101
Octal: 3045
Hexadecimal: 0x625
Base64: BiU=
One's complement: 63,962 (16-bit)

In other bases

ternary (3) 2011021

quaternary (4) 120211

quinary (5) 22243

senary (6) 11141

septenary (7) 4405

nonary (9) 2137

undecimal (11) 1200

duodecimal (12) ab1

tridecimal (13) 940

tetradecimal (14) 805

pentadecimal (15) 6ed

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian): ͵αφογʹ
Mayan (base 20): 𝋣·𝋲·𝋭
Chinese: 一千五百七十三
Chinese (financial): 壹仟伍佰柒拾參

In other modern scripts

Eastern Arabic ١٥٧٣ Devanagari १५७३ Bengali ১৫৭৩ Tamil ௧௫௭௩ Thai ๑๕๗๓ Tibetan ༡༥༧༣ Khmer ១៥៧៣ Lao ໑໕໗໓ Burmese ၁၅၇၃

Digit at this position in famous constants

π — Pi (π): Digit 1,573 = 1
e — Euler's number (e): Digit 1,573 = 0
φ — Golden ratio (φ): Digit 1,573 = 5
√2 — Pythagoras's (√2): Digit 1,573 = 1
ln 2 — Natural log of 2: Digit 1,573 = 2
γ — Euler-Mascheroni (γ): Digit 1,573 = 5

Also seen as

Unicode codepoint

Arabic Letter Alef With Hamza Below

U+0625

Other letter (Lo)

UTF-8 encoding: D8 A5 (2 bytes).

Lookup U+0625 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000625

RGB(0, 6, 37)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.37.

Address: 0.0.6.37
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.6.37

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

Position in π

The digit sequence 1573 first appears in π at position 1,657 of the decimal expansion (the 1,657ordinal-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.

Look up 1573 on Pi Search ↗