56557299 has 32 divisors (see below), whose sum is σ = 82243584. Its totient is φ = 34467840.

The previous prime is 56557297. The next prime is 56557301. The reversal of 56557299 is 99275565.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56557297) and next prime (56557301).

It is not a de Polignac number, because 56557299 - 2¹ = 56557297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56557297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292947 + ... + 293139.

It is an arithmetic number, because the mean of its divisors is an integer number (2570112).

Almost surely, 2^56557299 is an apocalyptic number.

56557299 is a deficient number, since it is larger than the sum of its proper divisors (25686285).

56557299 is a wasteful number, since it uses less digits than its factorization.

56557299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387.

The product of its digits is 850500, while the sum is 48.

The square root of 56557299 is about 7520.4586961169. The cubic root of 56557299 is about 383.8511860975.

The spelling of 56557299 in words is "fifty-six million, five hundred fifty-seven thousand, two hundred ninety-nine".