56291057 has 2 divisors, whose sum is σ = 56291058. Its totient is φ = 56291056.

The previous prime is 56291047. The next prime is 56291069. The reversal of 56291057 is 75019265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45819361 + 10471696 = 6769^2 + 3236^2 .

It is a cyclic number.

It is not a de Polignac number, because 56291057 - 2⁴ = 56291041 is a prime.

It is not a weakly prime, because it can be changed into another prime (56291047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28145528 + 28145529.

It is an arithmetic number, because the mean of its divisors is an integer number (28145529).

Almost surely, 2^56291057 is an apocalyptic number.

It is an amenable number.

56291057 is a deficient number, since it is larger than the sum of its proper divisors (1).

56291057 is an equidigital number, since it uses as much as digits as its factorization.

56291057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 56291057 is about 7502.7366340556. The cubic root of 56291057 is about 383.2479153513.

It can be divided in two parts, 562 and 91057, that added together give a palindrome (91619).

The spelling of 56291057 in words is "fifty-six million, two hundred ninety-one thousand, fifty-seven".