55865628 has 72 divisors (see below), whose sum is σ = 173814368. Its totient is φ = 14732928.

The previous prime is 55865611. The next prime is 55865639. The reversal of 55865628 is 82656855.

55865628 is a `hidden beast` number, since 5 + 5 + 86 + 562 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5251 + ... + 11802.

Almost surely, 2^55865628 is an apocalyptic number.

It is an amenable number.

55865628 is an abundant number, since it is smaller than the sum of its proper divisors (117948740).

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

55865628 is a wasteful number, since it uses less digits than its factorization.

55865628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17083 (or 17078 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 55865628 is about 7474.3312744352. The cubic root of 55865628 is about 382.2799862496.

The spelling of 55865628 in words is "fifty-five million, eight hundred sixty-five thousand, six hundred twenty-eight".