Properties of the Number 61425

Sixty-One Thousand Four Hundred Twenty-Five

Basics

Value: 61424 → 61425 → 61426

Parity: odd

Prime: No

Previous Prime: 61417

Next Prime: 61441

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 ² × 7 × 13

Divisors: 1, 3, 5, 7, 9, 13, 15, 21, 25, 27

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1110111111110001

Octal: 167761

Duodecimal: 2B669

Hexadecimal: eff1

Square: 3773030625

Square Root: 247.8406746278746

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

Tritriangular numbers: a(n) = binomial(binomial(n,2),2) = n*(n+1)*(n-1)*(n-2)/8. A50534

Triangular numbers that are the product of two triangular numbers greater than 1. A188630

Triangular numbers which are products of triangular numbers larger than 1. A68143

Dimensions of the irreducible representations of the simple Lie algebra of type E6 over the complex numbers, listed in increasing order. A121737

a(n) = smaller member of n-th pair of distinct, positive, triangular numbers whose sum and difference are also triangular numbers. A185129

Numbers n which when converted to base 4, reversed and converted back to base 10 yield a number m such that n mod m = 0. Cases which are trivial or result in digit loss are excluded. A91078

Number of partitions p of n not including ceiling(mean(p)) as a part. A241337

Number of partitions p of n such that 2*(number of even numbers in p) >= (number of odd numbers in p). A241654

a(n) = smallest number which can be expressed as sum of d consecutive positive integers in exactly n ways (where d>0 is a divisor of the number). A82637

Smallest term in the Hofstadter sequence A005243 having exactly n representations as sum of consecutive earlier terms. A118166