56991925 has 12 divisors (see below), whose sum is σ = 74390080. Its totient is φ = 43193520.

The previous prime is 56991901. The next prime is 56991929. The reversal of 56991925 is 52919965.

56991925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56991925 - 2¹⁹ = 56467637 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56991929) 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 11 ways as a sum of consecutive naturals, for example, 59517 + ... + 60466.

Almost surely, 2^56991925 is an apocalyptic number.

It is an amenable number.

56991925 is a deficient number, since it is larger than the sum of its proper divisors (17398155).

56991925 is a wasteful number, since it uses less digits than its factorization.

56991925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120012 (or 120007 counting only the distinct ones).

The product of its digits is 218700, while the sum is 46.

The square root of 56991925 is about 7549.2996363901. The cubic root of 56991925 is about 384.8319387919.

It can be divided in two parts, 5 and 6991925, that added together give a triangular number (6991930 = T₃₇₃₉).

The spelling of 56991925 in words is "fifty-six million, nine hundred ninety-one thousand, nine hundred twenty-five".