56649523 has 16 divisors (see below), whose sum is σ = 66493440. Its totient is φ = 47255616.

The previous prime is 56649521. The next prime is 56649563. The reversal of 56649523 is 32594665.

56649523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56649523 - 2¹ = 56649521 is a prime.

It is a super-2 number, since 2×56649523² = 6418336912255058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56649521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76288 + ... + 77026.

It is an arithmetic number, because the mean of its divisors is an integer number (4155840).

Almost surely, 2^56649523 is an apocalyptic number.

56649523 is a deficient number, since it is larger than the sum of its proper divisors (9843917).

56649523 is a wasteful number, since it uses less digits than its factorization.

56649523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 194400, while the sum is 40.

The square root of 56649523 is about 7526.5877394740. The cubic root of 56649523 is about 384.0597124843.

The spelling of 56649523 in words is "fifty-six million, six hundred forty-nine thousand, five hundred twenty-three".