55966564 has 24 divisors (see below), whose sum is σ = 101189088. Its totient is φ = 27068160.

The previous prime is 55966553. The next prime is 55966579. The reversal of 55966564 is 46566955.

It is a happy number.

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, 16884 + ... + 19924.

It is an arithmetic number, because the mean of its divisors is an integer number (4216212).

Almost surely, 2^55966564 is an apocalyptic number.

It is an amenable number.

55966564 is a deficient number, since it is larger than the sum of its proper divisors (45222524).

55966564 is a wasteful number, since it uses less digits than its factorization.

55966564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195 (or 3193 counting only the distinct ones).

The product of its digits is 972000, while the sum is 46.

The square root of 55966564 is about 7481.0804032573. The cubic root of 55966564 is about 382.5100776248.

The spelling of 55966564 in words is "fifty-five million, nine hundred sixty-six thousand, five hundred sixty-four".