56436857 has 2 divisors, whose sum is σ = 56436858. Its totient is φ = 56436856.

The previous prime is 56436827. The next prime is 56436937. The reversal of 56436857 is 75863465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55294096 + 1142761 = 7436^2 + 1069^2 .

It is a cyclic number.

It is not a de Polignac number, because 56436857 - 2¹⁴ = 56420473 is a prime.

It is not a weakly prime, because it can be changed into another prime (56436817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28218428 + 28218429.

It is an arithmetic number, because the mean of its divisors is an integer number (28218429).

Almost surely, 2^56436857 is an apocalyptic number.

It is an amenable number.

56436857 is a deficient number, since it is larger than the sum of its proper divisors (1).

56436857 is an equidigital number, since it uses as much as digits as its factorization.

56436857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 44.

The square root of 56436857 is about 7512.4468051361. The cubic root of 56436857 is about 383.5785147712.

The spelling of 56436857 in words is "fifty-six million, four hundred thirty-six thousand, eight hundred fifty-seven".