56532840 has 256 divisors, whose sum is σ = 216760320. Its totient is φ = 11473920.

The previous prime is 56532799. The next prime is 56532841. The reversal of 56532840 is 4823565.

It is not an unprimeable number, because it can be changed into a prime (56532841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338437 + ... + 338603.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^56532840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56532840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108380160).

56532840 is an abundant number, since it is smaller than the sum of its proper divisors (160227480).

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

56532840 is a wasteful number, since it uses less digits than its factorization.

56532840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 56532840 is about 7518.8323561574. The cubic root of 56532840 is about 383.7958441696.

The spelling of 56532840 in words is "fifty-six million, five hundred thirty-two thousand, eight hundred forty".