Number

355

355 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Odious Number Pernicious Number Recamán's Sequence Semiprime Smith Number Squarefree Year

Historical context — 355 AD

Calendar year

Year 355 (CCCLV) was a common year starting on Sunday of the Julian calendar.

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Historical context — 355 BC

Calendar year

The year 355 BC was a year of the pre-Julian Roman 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: Saturday
January 1, 355
Ended on: Saturday
December 31, 355
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 350s
350–359
Century: 4th century
301–400
Millennium: 1st millennium
1–1000
Years ago: 1,671
1671 years before 2026.

In other calendars

Hebrew: 4115 / 4116 AM
Rosh Hashanah falls in September/October.
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: 898 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 347 / 348 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 277 / 276 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 13
Digit product: 75
Digital root: 4
Palindrome: No
Bit width: 9 bits
Reversed: 553
Recamán's sequence: a(538) = 355
Square (n²): 126,025
Cube (n³): 44,738,875
Divisor count: 4
σ(n) — sum of divisors: 432
φ(n) — Euler's totient: 280
Sum of prime factors: 76

Primality

Prime factorization: 5 × 71

Nearest primes: 353 (−2) · 359 (+4)

Divisors & multiples

All divisors (4)

1 · 5 · 71 · 355

Aliquot sum (sum of proper divisors): 77

Factor pairs (a × b = 355)

1 × 355

5 × 71

First multiples

355 · 710 (double) · 1,065 · 1,420 · 1,775 · 2,130 · 2,485 · 2,840 · 3,195 · 3,550

Sums & aliquot sequence

As consecutive integers: 177 + 178 69 + 70 + 71 + 72 + 73 31 + 32 + … + 40

Aliquot sequence: 355 → 77 → 19 → 1 → 0 — terminates at zero

Representations

In words: three hundred fifty-five
Ordinal: 355th
Roman numeral: CCCLV
Binary: 101100011
Octal: 543
Hexadecimal: 0x163
Base64: AWM=
One's complement: 65,180 (16-bit)

In other bases

ternary (3) 111011

quaternary (4) 11203

quinary (5) 2410

senary (6) 1351

septenary (7) 1015

nonary (9) 434

undecimal (11) 2a3

duodecimal (12) 257

tridecimal (13) 214

tetradecimal (14) 1b5

pentadecimal (15) 18a

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): τνεʹ
Mayan (base 20): 𝋱·𝋯
Chinese: 三百五十五
Chinese (financial): 參佰伍拾伍

In other modern scripts

Eastern Arabic ٣٥٥ Devanagari ३५५ Bengali ৩৫৫ Tamil ௩௫௫ Thai ๓๕๕ Tibetan ༣༥༥ Khmer ៣៥៥ Lao ໓໕໕ Burmese ၃၅၅

Digit at this position in famous constants

π — Pi (π): Digit 355 = 2
e — Euler's number (e): Digit 355 = 7
φ — Golden ratio (φ): Digit 355 = 4
√2 — Pythagoras's (√2): Digit 355 = 9
ln 2 — Natural log of 2: Digit 355 = 6
γ — Euler-Mascheroni (γ): Digit 355 = 7

Also seen as

Unicode codepoint

Latin Small Letter T With Cedilla

U+0163

Lowercase letter (Ll)

UTF-8 encoding: C5 A3 (2 bytes).

Lookup U+0163 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000163

RGB(0, 1, 99)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.99.

Address: 0.0.1.99
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.99

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