1,515
1,515 is a composite number, odd, a calendar year.
Notable events — 1515 AD
- Sep 13 Francis I of France defeats the Swiss at Marignano.
- Jan 1 Francis I becomes king of France.
- Undated Thomas Wolsey rises to become Lord Chancellor of England.
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
-
Friday
January 1, 1515
- Ended on
-
Friday
December 31, 1515
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1510s
1510–1519
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
511
511 years before 2026.
In other calendars
- Hebrew
-
5275 / 5276 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
920 / 921 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Wood zodiac:Pig
Sexagenary cycle position 12 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2058 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
893 / 894 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1507 / 1508 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1437 / 1436 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 12
- Digit product
- 25
- Digital root
- 3
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 5,151
- Recamán's sequence
- a(1,530) = 1,515
- Square (n²)
- 2,295,225
- Cube (n³)
- 3,477,265,875
- Divisor count
- 8
- σ(n) — sum of divisors
- 2,448
- φ(n) — Euler's totient
- 800
- Sum of prime factors
- 109
Primality
Prime factorization: 3 × 5 × 101
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand five hundred fifteen
- Ordinal
- 1515th
- Roman numeral
- MDXV
- Binary
- 10111101011
- Octal
- 2753
- Hexadecimal
- 0x5EB
- Base64
- Bes=
- One's complement
- 64,020 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αφιεʹ
- Mayan (base 20)
- 𝋣·𝋯·𝋯
- Chinese
- 一千五百一十五
- Chinese (financial)
- 壹仟伍佰壹拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,515 = 0
- e — Euler's number (e)
- Digit 1,515 = 7
- φ — Golden ratio (φ)
- Digit 1,515 = 3
- √2 — Pythagoras's (√2)
- Digit 1,515 = 8
- ln 2 — Natural log of 2
- Digit 1,515 = 1
- γ — Euler-Mascheroni (γ)
- Digit 1,515 = 9
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.235.
- Address
- 0.0.5.235
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.235
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1515 first appears in π at position 1,098 of the decimal expansion (the 1,098ordinal-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.