56261790 has 144 divisors (see below), whose sum is σ = 165464208. Its totient is φ = 13747968.

The previous prime is 56261771. The next prime is 56261791. The reversal of 56261790 is 9716265.

56261790 is a `hidden beast` number, since 562 + 6 + 1 + 7 + 90 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56261791) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 410602 + ... + 410738.

It is an arithmetic number, because the mean of its divisors is an integer number (1149057).

Almost surely, 2^56261790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56261790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82732104).

56261790 is an abundant number, since it is smaller than the sum of its proper divisors (109202418).

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

56261790 is a wasteful number, since it uses less digits than its factorization.

56261790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 56261790 is about 7500.7859588179. The cubic root of 56261790 is about 383.1814840695.

The spelling of 56261790 in words is "fifty-six million, two hundred sixty-one thousand, seven hundred ninety".