56191964 has 12 divisors (see below), whose sum is σ = 101508288. Its totient is φ = 27189600.

The previous prime is 56191939. The next prime is 56191981. The reversal of 56191964 is 46919165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226457 + ... + 226704.

It is an arithmetic number, because the mean of its divisors is an integer number (8459024).

Almost surely, 2^56191964 is an apocalyptic number.

It is an amenable number.

56191964 is a deficient number, since it is larger than the sum of its proper divisors (45316324).

56191964 is a wasteful number, since it uses less digits than its factorization.

56191964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453196 (or 453194 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 56191964 is about 7496.1299348397. The cubic root of 56191964 is about 383.0228974169.

The spelling of 56191964 in words is "fifty-six million, one hundred ninety-one thousand, nine hundred sixty-four".