56171972 has 12 divisors (see below), whose sum is σ = 99912876. Its totient is φ = 27625440.

The previous prime is 56171963. The next prime is 56171981. The reversal of 56171972 is 27917165.

56171972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56171963) and next prime (56171981).

It can be written as a sum of positive squares in 2 ways, for example, as 16532356 + 39639616 = 4066^2 + 6296^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 114863 + ... + 115350.

It is an arithmetic number, because the mean of its divisors is an integer number (8326073).

Almost surely, 2^56171972 is an apocalyptic number.

It is an amenable number.

56171972 is a deficient number, since it is larger than the sum of its proper divisors (43740904).

56171972 is a wasteful number, since it uses less digits than its factorization.

56171972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230278 (or 230276 counting only the distinct ones).

The product of its digits is 26460, while the sum is 38.

The square root of 56171972 is about 7494.7963281199. The cubic root of 56171972 is about 382.9774680144.

The spelling of 56171972 in words is "fifty-six million, one hundred seventy-one thousand, nine hundred seventy-two".