Properties of the Number 153

One Hundred Fifty-Three

Basics

Value: 152 → 153 → 154

Parity: odd

Prime: No

Previous Prime: 151

Next Prime: 157

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 17

Divisors: 1, 3, 9, 17, 51, 153

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001

Octal: 231

Duodecimal: 109

Hexadecimal: 99

Square: 23409

Square Root: 12.36931687685298

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: Yes

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: Yes

Fermat Number: No

Cullen Number: No

OEIS Sequences

Coordination sequence for planar net 3.3.3.3.6 (also called the fsz net). A250120

Triangular numbers: a(n) = binomial(n+1,2) = n*(n+1)/2 = 0 + 1 + 2 + ... + n. A217

Completely multiplicative with a(prime(k)) = prime(k+1). A3961

Numbers that are not squarefree. Numbers that are divisible by a square greater than 1. The complement of A005117. A13929

Numbers k such that (11·10^k + 19)/3 is prime. A270339

Hexagonal numbers: a(n) = n*(2·n-1). A384

Niven (or Harshad, or harshad) numbers: numbers that are divisible by the sum of their digits. A5349

a(n) = 3·n. A8585

Numbers that are the product of exactly three (not necessarily distinct) primes. A14612

a(n) = 4·n + 1. A16813

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