55428664 has 32 divisors (see below), whose sum is σ = 107388000. Its totient is φ = 26801280.

The previous prime is 55428623. The next prime is 55428767. The reversal of 55428664 is 46682455.

55428664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58434 + ... + 59374.

It is an arithmetic number, because the mean of its divisors is an integer number (3355875).

Almost surely, 2^55428664 is an apocalyptic number.

It is an amenable number.

55428664 is a deficient number, since it is larger than the sum of its proper divisors (51959336).

55428664 is a wasteful number, since it uses less digits than its factorization.

55428664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1179 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

The square root of 55428664 is about 7445.0429145842. The cubic root of 55428664 is about 381.2806835826.

The spelling of 55428664 in words is "fifty-five million, four hundred twenty-eight thousand, six hundred sixty-four".