56615297 has 2 divisors, whose sum is σ = 56615298. Its totient is φ = 56615296.

The previous prime is 56615281. The next prime is 56615323. The reversal of 56615297 is 79251665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43970161 + 12645136 = 6631^2 + 3556^2 .

It is a cyclic number.

It is not a de Polignac number, because 56615297 - 2⁴ = 56615281 is a prime.

It is not a weakly prime, because it can be changed into another prime (56615227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28307648 + 28307649.

It is an arithmetic number, because the mean of its divisors is an integer number (28307649).

Almost surely, 2^56615297 is an apocalyptic number.

It is an amenable number.

56615297 is a deficient number, since it is larger than the sum of its proper divisors (1).

56615297 is an equidigital number, since it uses as much as digits as its factorization.

56615297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 56615297 is about 7524.3137228587. The cubic root of 56615297 is about 383.9823509864.

The spelling of 56615297 in words is "fifty-six million, six hundred fifteen thousand, two hundred ninety-seven".