55764440 has 32 divisors (see below), whose sum is σ = 127602000. Its totient is φ = 21926784.

The previous prime is 55764433. The next prime is 55764479. The reversal of 55764440 is 4446755.

It is a self number, because there is not a number n which added to its sum of digits gives 55764440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9455 + ... + 14174.

Almost surely, 2^55764440 is an apocalyptic number.

It is an amenable number.

55764440 is an abundant number, since it is smaller than the sum of its proper divisors (71837560).

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

55764440 is a wasteful number, since it uses less digits than its factorization.

55764440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23699 (or 23695 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 55764440 is about 7467.5591728489. The cubic root of 55764440 is about 382.0490420667.

The spelling of 55764440 in words is "fifty-five million, seven hundred sixty-four thousand, four hundred forty".