56869513 has 2 divisors, whose sum is σ = 56869514. Its totient is φ = 56869512.

The previous prime is 56869459. The next prime is 56869523. The reversal of 56869513 is 31596865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39538944 + 17330569 = 6288^2 + 4163^2 .

It is a cyclic number.

It is not a de Polignac number, because 56869513 - 2¹⁷ = 56738441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56869513.

It is not a weakly prime, because it can be changed into another prime (56869523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28434756 + 28434757.

It is an arithmetic number, because the mean of its divisors is an integer number (28434757).

Almost surely, 2^56869513 is an apocalyptic number.

It is an amenable number.

56869513 is a deficient number, since it is larger than the sum of its proper divisors (1).

56869513 is an equidigital number, since it uses as much as digits as its factorization.

56869513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 56869513 is about 7541.1877711671. The cubic root of 56869513 is about 384.5562166018.

The spelling of 56869513 in words is "fifty-six million, eight hundred sixty-nine thousand, five hundred thirteen".