Properties of the Number 61455

Sixty-One Thousand Four Hundred Fifty-Five

Basics

Value: 61454 → 61455 → 61456

Parity: odd

Prime: No

Previous Prime: 61441

Next Prime: 61463

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 17 × 241

Divisors: 1, 3, 5, 15, 17, 51, 85, 241, 255, 723

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000000001111

Octal: 170017

Duodecimal: 2B693

Hexadecimal: f00f

Square: 3776717025

Square Root: 247.90118999310997

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 whose set of base 16 digits is {0,F}, where F base 16 = 15 base 10. A97262

List of codewords in binary lexicode with Hamming distance 8 written as decimal numbers. A75940

Numbers n such that at least one of the following four conditions is satisfied: 1# d(n)=φ(n); 2# d(n)=u(n); 3# φ(n)=u(n), or 4# n=2u(n). Here d(n)=A000005(n) is the number of divisors of n, φ(n)=A000010(n) is Euler's totient and u(n)=A045763(n) is the size of the 'unrelated set'. A83246

Rows of negated binary Walsh matrices interpreted as reverse binary numbers. A228540

For any number n with runs in binary expansion (r_w, ..., r₀), let p(n) be the polynomial of a single indeterminate·where the coefficient of x^e is r_e for e = 0..w and otherwise 0, and let q be the inverse of p; a(n) = q(p(n)²). A355654

a(n) = (n - 1)*(n³ + 1) = n⁴ - n³ + n - 1, for n >= 1. A242604

The number of upper-triangular matrices whose nonzero entries are positive odd numbers summing to n and each row and each column contains a nonzero entry. A289317

Numbers in base 10 that are palindromic in bases 2, 4, and 16. A319583

Numbers k such that 407·2^k+1 is prime. A323103

Numbers whose base-4 representation contains exactly four 0's and four 3's. A45085