55031384 has 32 divisors (see below), whose sum is σ = 106200720. Its totient is φ = 26722176.

The previous prime is 55031377. The next prime is 55031399. The reversal of 55031384 is 48313055.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 44762 + ... + 45974.

Almost surely, 2^55031384 is an apocalyptic number.

It is an amenable number.

55031384 is a deficient number, since it is larger than the sum of its proper divisors (51169336).

55031384 is a wasteful number, since it uses less digits than its factorization.

55031384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 55031384 is about 7418.3140941861. The cubic root of 55031384 is about 380.3675667827.

The spelling of 55031384 in words is "fifty-five million, thirty-one thousand, three hundred eighty-four".