55665512 has 16 divisors (see below), whose sum is σ = 119283360. Its totient is φ = 23856624.

The previous prime is 55665509. The next prime is 55665523. The reversal of 55665512 is 21556655.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496958 + ... + 497069.

It is an arithmetic number, because the mean of its divisors is an integer number (7455210).

Almost surely, 2^55665512 is an apocalyptic number.

It is an amenable number.

55665512 is an abundant number, since it is smaller than the sum of its proper divisors (63617848).

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

55665512 is a wasteful number, since it uses less digits than its factorization.

55665512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994040 (or 994036 counting only the distinct ones).

The product of its digits is 45000, while the sum is 35.

The square root of 55665512 is about 7460.9323814119. The cubic root of 55665512 is about 381.8229857019.

The spelling of 55665512 in words is "fifty-five million, six hundred sixty-five thousand, five hundred twelve".