Number
1,553
1,553 is a prime, odd, a calendar year.
Notable events — 1553 AD
- Jul 6 Edward VI dies; Lady Jane Grey is proclaimed queen.
- Jul 19 Mary I deposes Jane Grey and becomes queen of England.
- Oct 27 Michael Servetus is burned at the stake in Geneva.
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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 1553
- Ended on
-
Thursday
December 31, 1553
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
1550s
1550–1559
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
473
473 years before 2026.
In other calendars
- Hebrew
-
5313 / 5314 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
960 / 961 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Ox
Sexagenary cycle position 50 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2096 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
931 / 932 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1545 / 1546 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1475 / 1474 Saka
Indian national calendar; year starts in March.
Properties
Primality
1,553 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
Sums & aliquot sequence
As a sum of two squares:
23² + 32²
As consecutive integers:
776 + 777
Representations
- In words
- one thousand five hundred fifty-three
- Ordinal
- 1553rd
- Roman numeral
- MDLIII
- Binary
- 11000010001
- Octal
- 3021
- Hexadecimal
- 0x611
- Base64
- BhE=
- One's complement
- 63,982 (16-bit)
In other bases
ternary (3)
2010112
quaternary (4)
120101
quinary (5)
22203
senary (6)
11105
septenary (7)
4346
nonary (9)
2115
undecimal (11)
1192
duodecimal (12)
a95
tridecimal (13)
926
tetradecimal (14)
7cd
pentadecimal (15)
6d8
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵αφνγʹ
- Mayan (base 20)
- 𝋣·𝋱·𝋭
- Chinese
- 一千五百五十三
- Chinese (financial)
- 壹仟伍佰伍拾參
In other modern scripts
Eastern Arabic
١٥٥٣
Devanagari
१५५३
Bengali
১৫৫৩
Tamil
௧௫௫௩
Thai
๑๕๕๓
Tibetan
༡༥༥༣
Khmer
១៥៥៣
Lao
໑໕໕໓
Burmese
၁၅၅၃
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,553 = 3
- e — Euler's number (e)
- Digit 1,553 = 8
- φ — Golden ratio (φ)
- Digit 1,553 = 0
- √2 — Pythagoras's (√2)
- Digit 1,553 = 4
- ln 2 — Natural log of 2
- Digit 1,553 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,553 = 3
Also seen as
Prime neighborhood
Unicode codepoint
ؑ
Arabic Sign Alayhe Assallam
U+0611
Non-spacing mark (Mn)
UTF-8 encoding: D8 91 (2 bytes).
Hex color
#000611
RGB(0, 6, 17)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.17.
- Address
- 0.0.6.17
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.17
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Position in π
The digit sequence 1553 first appears in π at position 17,192 of the decimal expansion (the 17,192ordinal-suffix:nd 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.