55764840 has 64 divisors (see below), whose sum is σ = 167832000. Its totient is φ = 14822912.

The previous prime is 55764823. The next prime is 55764847. The reversal of 55764840 is 4846755.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55764847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52636 + ... + 53684.

It is an arithmetic number, because the mean of its divisors is an integer number (2622375).

Almost surely, 2^55764840 is an apocalyptic number.

It is an amenable number.

55764840 is an abundant number, since it is smaller than the sum of its proper divisors (112067160).

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

55764840 is a wasteful number, since it uses less digits than its factorization.

55764840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 1502 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 55764840 is about 7467.5859553138. The cubic root of 55764840 is about 382.0499555476.

The spelling of 55764840 in words is "fifty-five million, seven hundred sixty-four thousand, eight hundred forty".