56521974 has 16 divisors (see below), whose sum is σ = 119693808. Its totient is φ = 17732352.

The previous prime is 56521973. The next prime is 56521981. The reversal of 56521974 is 47912565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56521973) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 276967 + ... + 277170.

It is an arithmetic number, because the mean of its divisors is an integer number (7480863).

Almost surely, 2^56521974 is an apocalyptic number.

56521974 is an abundant number, since it is smaller than the sum of its proper divisors (63171834).

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

56521974 is a wasteful number, since it uses less digits than its factorization.

56521974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554159.

The product of its digits is 75600, while the sum is 39.

The square root of 56521974 is about 7518.1097358312. The cubic root of 56521974 is about 383.7712531952.

It can be divided in two parts, 5652 and 1974, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 56521974 in words is "fifty-six million, five hundred twenty-one thousand, nine hundred seventy-four".