Properties of the Number 3157

Three Thousand One Hundred Fifty-Seven

Basics

Value: 3156 → 3157 → 3158

Parity: odd

Prime: No

Previous Prime: 3137

Next Prime: 3163

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 7 × 11 × 41

Divisors: 1, 7, 11, 41, 77, 287, 451, 3157

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001010101

Octal: 6125

Duodecimal: 19B1

Hexadecimal: c55

Square: 9966649

Square Root: 56.18718715152058

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers that are the sum of 2 positive 5th powers. A3347

a(n) = 2ⁿ + 5ⁿ. A74600

Sum of 5th powers of digits of n. A55014

Expansion of e.g.f. 1 / (1 - x·cos(x)). A352252

a(n) = 2·n² + 11·n + 12. A71355

Number T(n,k) of undirected labeled graphs on n nodes with exactly k cycle graphs as connected components; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A215771

Numbers k with property that average digit of k² is s=7. A164773

Numbers that can be written as s^x + t^y + u^z with 1 < s < t < u and {s,t,u} = {x,y,z} (the sequence of exponents can be any permutation of s,t,u). A385233

Numbers m such that the concatenation of m with m+4 gives a square. A115437

Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k nonincreasing even cycles (0<=k<=floor(n/4)). A cycle (b(1), b(2), ...) is said to be increasing if, when written with its smallest element in the first position, it satisfies b(1)<b(2)<b(3)<... . A cycle is said to be even if it has an even number of entries. For example, the permutation (1528)(347)(6) has 1 nonincreasing even cycles. A186769