55939972 has 24 divisors (see below), whose sum is σ = 107749152. Its totient is φ = 25200000.

The previous prime is 55939951. The next prime is 55939981. The reversal of 55939972 is 27993955.

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, 654 + ... + 10597.

It is an arithmetic number, because the mean of its divisors is an integer number (4489548).

Almost surely, 2^55939972 is an apocalyptic number.

It is an amenable number.

55939972 is a deficient number, since it is larger than the sum of its proper divisors (51809180).

55939972 is a wasteful number, since it uses less digits than its factorization.

55939972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11379 (or 11377 counting only the distinct ones).

The product of its digits is 765450, while the sum is 49.

The square root of 55939972 is about 7479.3029086941. The cubic root of 55939972 is about 382.4494859745.

The spelling of 55939972 in words is "fifty-five million, nine hundred thirty-nine thousand, nine hundred seventy-two".