55727320 has 32 divisors (see below), whose sum is σ = 136786320. Its totient is φ = 20264320.

The previous prime is 55727303. The next prime is 55727381. The reversal of 55727320 is 2372755.

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, 62887 + ... + 63766.

Almost surely, 2^55727320 is an apocalyptic number.

It is an amenable number.

55727320 is an abundant number, since it is smaller than the sum of its proper divisors (81059000).

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

55727320 is a wasteful number, since it uses less digits than its factorization.

55727320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126675 (or 126671 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 55727320 is about 7465.0733419036. The cubic root of 55727320 is about 381.9642520206.

The spelling of 55727320 in words is "fifty-five million, seven hundred twenty-seven thousand, three hundred twenty".