55697612 has 12 divisors (see below), whose sum is σ = 97786416. Its totient is φ = 27758640.

The previous prime is 55697581. The next prime is 55697657. The reversal of 55697612 is 21679655.

It is a self number, because there is not a number n which added to its sum of digits gives 55697612.

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, 21143 + ... + 23630.

It is an arithmetic number, because the mean of its divisors is an integer number (8148868).

Almost surely, 2^55697612 is an apocalyptic number.

It is an amenable number.

55697612 is a deficient number, since it is larger than the sum of its proper divisors (42088804).

55697612 is a wasteful number, since it uses less digits than its factorization.

55697612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45088 (or 45086 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 55697612 is about 7463.0832770377. The cubic root of 55697612 is about 381.8963654435.

The spelling of 55697612 in words is "fifty-five million, six hundred ninety-seven thousand, six hundred twelve".