55731504 has 40 divisors (see below), whose sum is σ = 148941360. Its totient is φ = 17936128.

The previous prime is 55731449. The next prime is 55731523. The reversal of 55731504 is 40513755.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 18627 + ... + 21410.

It is an arithmetic number, because the mean of its divisors is an integer number (3723534).

Almost surely, 2^55731504 is an apocalyptic number.

It is an amenable number.

55731504 is an abundant number, since it is smaller than the sum of its proper divisors (93209856).

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

55731504 is a wasteful number, since it uses less digits than its factorization.

55731504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40077 (or 40071 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55731504 is about 7465.3535750157. The cubic root of 55731504 is about 381.9738110569.

The spelling of 55731504 in words is "fifty-five million, seven hundred thirty-one thousand, five hundred four".