56815201 has 2 divisors, whose sum is σ = 56815202. Its totient is φ = 56815200.

The previous prime is 56815189. The next prime is 56815259. The reversal of 56815201 is 10251865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33918976 + 22896225 = 5824^2 + 4785^2 .

It is a cyclic number.

It is not a de Polignac number, because 56815201 - 2¹¹ = 56813153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56815201.

It is not a weakly prime, because it can be changed into another prime (56815601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28407600 + 28407601.

It is an arithmetic number, because the mean of its divisors is an integer number (28407601).

Almost surely, 2^56815201 is an apocalyptic number.

It is an amenable number.

56815201 is a deficient number, since it is larger than the sum of its proper divisors (1).

56815201 is an equidigital number, since it uses as much as digits as its factorization.

56815201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 56815201 is about 7537.5858867412. The cubic root of 56815201 is about 384.4337569067.

The spelling of 56815201 in words is "fifty-six million, eight hundred fifteen thousand, two hundred one".