56512500 has 144 divisors (see below), whose sum is σ = 181113408. Its totient is φ = 13600000.

The previous prime is 56512499. The next prime is 56512513. The reversal of 56512500 is 521565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 412432 + ... + 412568.

It is an arithmetic number, because the mean of its divisors is an integer number (1257732).

Almost surely, 2^56512500 is an apocalyptic number.

56512500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56512500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90556704).

56512500 is an abundant number, since it is smaller than the sum of its proper divisors (124600908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56512500 is a wasteful number, since it uses less digits than its factorization.

56512500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 56512500 is about 7517.4796308337. The cubic root of 56512500 is about 383.7498099006.

56512500 divided by its product of nonzero digits (1500) gives a triangular number (37675 = T₂₇₄).

The spelling of 56512500 in words is "fifty-six million, five hundred twelve thousand, five hundred".