55455664 has 40 divisors (see below), whose sum is σ = 117635328. Its totient is φ = 25116480.

The previous prime is 55455643. The next prime is 55455671. The reversal of 55455664 is 46655455.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 85389 + ... + 86035.

Almost surely, 2^55455664 is an apocalyptic number.

It is an amenable number.

55455664 is an abundant number, since it is smaller than the sum of its proper divisors (62179664).

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

55455664 is a wasteful number, since it uses less digits than its factorization.

55455664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1147 counting only the distinct ones).

The product of its digits is 360000, while the sum is 40.

The square root of 55455664 is about 7446.8559808821. The cubic root of 55455664 is about 381.3425824067.

The spelling of 55455664 in words is "fifty-five million, four hundred fifty-five thousand, six hundred sixty-four".