55818825 has 12 divisors (see below), whose sum is σ = 92287248. Its totient is φ = 29770000.

The previous prime is 55818821. The next prime is 55818883. The reversal of 55818825 is 52881855.

It is not a de Polignac number, because 55818825 - 2² = 55818821 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55818821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372051 + ... + 372200.

It is an arithmetic number, because the mean of its divisors is an integer number (7690604).

Almost surely, 2^55818825 is an apocalyptic number.

It is an amenable number.

55818825 is a deficient number, since it is larger than the sum of its proper divisors (36468423).

55818825 is a wasteful number, since it uses less digits than its factorization.

55818825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744264 (or 744259 counting only the distinct ones).

The product of its digits is 128000, while the sum is 42.

The square root of 55818825 is about 7471.1997028590. The cubic root of 55818825 is about 382.1732011558.

The spelling of 55818825 in words is "fifty-five million, eight hundred eighteen thousand, eight hundred twenty-five".