55537224 has 16 divisors (see below), whose sum is σ = 138843120. Its totient is φ = 18512400.

The previous prime is 55537189. The next prime is 55537241. The reversal of 55537224 is 42273555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157002 + ... + 1157049.

It is an arithmetic number, because the mean of its divisors is an integer number (8677695).

Almost surely, 2^55537224 is an apocalyptic number.

It is an amenable number.

55537224 is an abundant number, since it is smaller than the sum of its proper divisors (83305896).

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

55537224 is a wasteful number, since it uses less digits than its factorization.

55537224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314060 (or 2314056 counting only the distinct ones).

The product of its digits is 42000, while the sum is 33.

The square root of 55537224 is about 7452.3301054100. The cubic root of 55537224 is about 381.5294407820.

The spelling of 55537224 in words is "fifty-five million, five hundred thirty-seven thousand, two hundred twenty-four".