55591672 has 16 divisors (see below), whose sum is σ = 104819400. Its totient is φ = 27639840.

The previous prime is 55591633. The next prime is 55591681. The reversal of 55591672 is 27619555.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17979 + ... + 20842.

Almost surely, 2^55591672 is an apocalyptic number.

It is an amenable number.

55591672 is a deficient number, since it is larger than the sum of its proper divisors (49227728).

55591672 is a wasteful number, since it uses less digits than its factorization.

55591672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39006 (or 39002 counting only the distinct ones).

The product of its digits is 94500, while the sum is 40.

The square root of 55591672 is about 7455.9822961163. The cubic root of 55591672 is about 381.6540822897.

The spelling of 55591672 in words is "fifty-five million, five hundred ninety-one thousand, six hundred seventy-two".