55540624 has 20 divisors (see below), whose sum is σ = 107725744. Its totient is φ = 27740448.

The previous prime is 55540621. The next prime is 55540631. The reversal of 55540624 is 42604555.

It is not an unprimeable number, because it can be changed into a prime (55540621) 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, 26959 + ... + 28945.

Almost surely, 2^55540624 is an apocalyptic number.

It is an amenable number.

55540624 is a deficient number, since it is larger than the sum of its proper divisors (52185120).

55540624 is a wasteful number, since it uses less digits than its factorization.

55540624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742 (or 3736 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 55540624 is about 7452.5582184912. The cubic root of 55540624 is about 381.5372263928.

The spelling of 55540624 in words is "fifty-five million, five hundred forty thousand, six hundred twenty-four".