56431937 has 2 divisors, whose sum is σ = 56431938. Its totient is φ = 56431936.

The previous prime is 56431933. The next prime is 56431939. The reversal of 56431937 is 73913465.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39325441 + 17106496 = 6271^2 + 4136^2 .

It is a cyclic number.

It is not a de Polignac number, because 56431937 - 2² = 56431933 is a prime.

Together with 56431939, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56431937.

It is not a weakly prime, because it can be changed into another prime (56431931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28215968 + 28215969.

It is an arithmetic number, because the mean of its divisors is an integer number (28215969).

Almost surely, 2^56431937 is an apocalyptic number.

It is an amenable number.

56431937 is a deficient number, since it is larger than the sum of its proper divisors (1).

56431937 is an equidigital number, since it uses as much as digits as its factorization.

56431937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 38.

The square root of 56431937 is about 7512.1193414375. The cubic root of 56431937 is about 383.5673680299.

The spelling of 56431937 in words is "fifty-six million, four hundred thirty-one thousand, nine hundred thirty-seven".