55442624 has 28 divisors (see below), whose sum is σ = 111535464. Its totient is φ = 27339264.

The previous prime is 55442623. The next prime is 55442641. The reversal of 55442624 is 42624455.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (55442623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262 + ... + 10605.

Almost surely, 2^55442624 is an apocalyptic number.

It is an amenable number.

55442624 is an abundant number, since it is smaller than the sum of its proper divisors (56092840).

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

55442624 is a wasteful number, since it uses less digits than its factorization.

55442624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952 (or 11942 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 55442624 is about 7445.9803921310. The cubic root of 55442624 is about 381.3126900763.

The spelling of 55442624 in words is "fifty-five million, four hundred forty-two thousand, six hundred twenty-four".