56431057 has 2 divisors, whose sum is σ = 56431058. Its totient is φ = 56431056.

The previous prime is 56431009. The next prime is 56431079. The reversal of 56431057 is 75013465.

56431057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55935441 + 495616 = 7479^2 + 704^2 .

It is a cyclic number.

It is not a de Polignac number, because 56431057 - 2⁷ = 56430929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56431087) 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 as a sum of consecutive naturals, namely, 28215528 + 28215529.

It is an arithmetic number, because the mean of its divisors is an integer number (28215529).

Almost surely, 2^56431057 is an apocalyptic number.

It is an amenable number.

56431057 is a deficient number, since it is larger than the sum of its proper divisors (1).

56431057 is an equidigital number, since it uses as much as digits as its factorization.

56431057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 56431057 is about 7512.0607691898. The cubic root of 56431057 is about 383.5653742355.

The spelling of 56431057 in words is "fifty-six million, four hundred thirty-one thousand, fifty-seven".