Number

1,375

1,375 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Evil Number Recamán's Sequence Year

Historical context — 1375 AD

Calendar year

Year 1375 (MCCCLXXV) was a common year starting on Monday of the Julian calendar.

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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: Sunday
January 1, 1375
Ended on: Sunday
December 31, 1375
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 1370s
1370–1379
Century: 14th century
1301–1400
Millennium: 2nd millennium
1001–2000
Years ago: 651
651 years before 2026.

In other calendars

Hebrew: 5135 / 5136 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 776 / 777 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Wood zodiac:Rabbit
Sexagenary cycle position 52 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1918 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 753 / 754 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1367 / 1368 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1297 / 1296 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: 5,731
Recamán's sequence: a(8,378) = 1,375
Square (n²): 1,890,625
Cube (n³): 2,599,609,375
Divisor count: 8
σ(n) — sum of divisors: 1,872
φ(n) — Euler's totient: 1,000
Sum of prime factors: 26

Primality

Prime factorization: 5 ³ × 11

Nearest primes: 1,373 (−2) · 1,381 (+6)

Divisors & multiples

All divisors (8)

1 · 5 · 11 · 25 · 55 · 125 · 275 · 1375

Aliquot sum (sum of proper divisors): 497

Factor pairs (a × b = 1,375)

1 × 1375

5 × 275

11 × 125

25 × 55

First multiples

1,375 · 2,750 (double) · 4,125 · 5,500 · 6,875 · 8,250 · 9,625 · 11,000 · 12,375 · 13,750

Sums & aliquot sequence

As consecutive integers: 687 + 688 273 + 274 + 275 + 276 + 277 133 + 134 + … + 142 120 + 121 + … + 130

Aliquot sequence: 1,375 → 497 → 79 → 1 → 0 — terminates at zero

Representations

In words: one thousand three hundred seventy-five
Ordinal: 1375th
Roman numeral: MCCCLXXV
Binary: 10101011111
Octal: 2537
Hexadecimal: 0x55F
Base64: BV8=
One's complement: 64,160 (16-bit)

In other bases

ternary (3) 1212221

quaternary (4) 111133

quinary (5) 21000

senary (6) 10211

septenary (7) 4003

nonary (9) 1787

undecimal (11) 1040

duodecimal (12) 967

tridecimal (13) 81a

tetradecimal (14) 703

pentadecimal (15) 61a

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵ατοεʹ
Mayan (base 20): 𝋣·𝋨·𝋯
Chinese: 一千三百七十五
Chinese (financial): 壹仟參佰柒拾伍

In other modern scripts

Eastern Arabic ١٣٧٥ Devanagari १३७५ Bengali ১৩৭৫ Tamil ௧௩௭௫ Thai ๑๓๗๕ Tibetan ༡༣༧༥ Khmer ១៣៧៥ Lao ໑໓໗໕ Burmese ၁၃၇၅

Digit at this position in famous constants

π — Pi (π): Digit 1,375 = 6
e — Euler's number (e): Digit 1,375 = 7
φ — Golden ratio (φ): Digit 1,375 = 6
√2 — Pythagoras's (√2): Digit 1,375 = 3
ln 2 — Natural log of 2: Digit 1,375 = 1
γ — Euler-Mascheroni (γ): Digit 1,375 = 0

Also seen as

Unicode codepoint

Armenian Abbreviation Mark

U+055F

Other punctuation (Po)

UTF-8 encoding: D5 9F (2 bytes).

Lookup U+055F on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00055F

RGB(0, 5, 95)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.95.

Address: 0.0.5.95
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.5.95

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

Position in π

The digit sequence 1375 first appears in π at position 4,612 of the decimal expansion (the 4,612ordinal-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 1375 on Pi Search ↗