56537868 has 24 divisors (see below), whose sum is σ = 133781760. Its totient is φ = 18580240.

The previous prime is 56537867. The next prime is 56537879. The reversal of 56537868 is 86873565.

It is not an unprimeable number, because it can be changed into a prime (56537861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32328 + ... + 34031.

It is an arithmetic number, because the mean of its divisors is an integer number (5574240).

Almost surely, 2^56537868 is an apocalyptic number.

It is an amenable number.

56537868 is an abundant number, since it is smaller than the sum of its proper divisors (77243892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56537868 is a wasteful number, since it uses less digits than its factorization.

56537868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66437 (or 66435 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 56537868 is about 7519.1667091507. The cubic root of 56537868 is about 383.8072220301.

The spelling of 56537868 in words is "fifty-six million, five hundred thirty-seven thousand, eight hundred sixty-eight".