55637764 has 24 divisors (see below), whose sum is σ = 119835968. Its totient is φ = 22010400.

The previous prime is 55637749. The next prime is 55637783. The reversal of 55637764 is 46773655.

It is a self number, because there is not a number n which added to its sum of digits gives 55637764.

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, 76062 + ... + 76789.

Almost surely, 2^55637764 is an apocalyptic number.

It is an amenable number.

55637764 is an abundant number, since it is smaller than the sum of its proper divisors (64198204).

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

55637764 is a wasteful number, since it uses less digits than its factorization.

55637764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152875 (or 152873 counting only the distinct ones).

The product of its digits is 529200, while the sum is 43.

The square root of 55637764 is about 7459.0725965096. The cubic root of 55637764 is about 381.7595317802.

The spelling of 55637764 in words is "fifty-five million, six hundred thirty-seven thousand, seven hundred sixty-four".