55538625 has 32 divisors (see below), whose sum is σ = 95621760. Its totient is φ = 28593600.

The previous prime is 55538621. The next prime is 55538627. The reversal of 55538625 is 52683555.

It is not a de Polignac number, because 55538625 - 2² = 55538621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55538621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8322 + ... + 13428.

It is an arithmetic number, because the mean of its divisors is an integer number (2988180).

Almost surely, 2^55538625 is an apocalyptic number.

It is an amenable number.

55538625 is a deficient number, since it is larger than the sum of its proper divisors (40083135).

55538625 is a wasteful number, since it uses less digits than its factorization.

55538625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154 (or 5144 counting only the distinct ones).

The product of its digits is 180000, while the sum is 39.

The square root of 55538625 is about 7452.4241022636. The cubic root of 55538625 is about 381.5326489501.

The spelling of 55538625 in words is "fifty-five million, five hundred thirty-eight thousand, six hundred twenty-five".