56281564 has 6 divisors (see below), whose sum is σ = 98492744. Its totient is φ = 28140780.

The previous prime is 56281549. The next prime is 56281567. The reversal of 56281564 is 46518265.

It is a super-2 number, since 2×56281564² = 6335228892572192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56281567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7035192 + ... + 7035199.

Almost surely, 2^56281564 is an apocalyptic number.

It is an amenable number.

56281564 is a deficient number, since it is larger than the sum of its proper divisors (42211180).

56281564 is a wasteful number, since it uses less digits than its factorization.

56281564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14070395 (or 14070393 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 56281564 is about 7502.1039715536. The cubic root of 56281564 is about 383.2263703245.

The spelling of 56281564 in words is "fifty-six million, two hundred eighty-one thousand, five hundred sixty-four".