55713720 has 32 divisors (see below), whose sum is σ = 167141520. Its totient is φ = 14856960.

The previous prime is 55713703. The next prime is 55713769. The reversal of 55713720 is 2731755.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 232021 + ... + 232260.

Almost surely, 2^55713720 is an apocalyptic number.

It is an amenable number.

55713720 is an abundant number, since it is smaller than the sum of its proper divisors (111427800).

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

55713720 is a wasteful number, since it uses less digits than its factorization.

55713720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464295 (or 464291 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 55713720 is about 7464.1623776550. The cubic root of 55713720 is about 381.9331772774.

The spelling of 55713720 in words is "fifty-five million, seven hundred thirteen thousand, seven hundred twenty".