55971604 has 48 divisors (see below), whose sum is σ = 112275072. Its totient is φ = 24216192.

The previous prime is 55971583. The next prime is 55971611. The reversal of 55971604 is 40617955.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62947 + ... + 63829.

It is an arithmetic number, because the mean of its divisors is an integer number (2339064).

Almost surely, 2^55971604 is an apocalyptic number.

It is an amenable number.

55971604 is an abundant number, since it is smaller than the sum of its proper divisors (56303468).

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

55971604 is a wasteful number, since it uses less digits than its factorization.

55971604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 55971604 is about 7481.4172454155. The cubic root of 55971604 is about 382.5215594381.

The spelling of 55971604 in words is "fifty-five million, nine hundred seventy-one thousand, six hundred four".