55518838 has 16 divisors (see below), whose sum is σ = 90329904. Its totient is φ = 25488640.

The previous prime is 55518829. The next prime is 55518863. The reversal of 55518838 is 83881555.

It is a junction number, because it is equal to n+sod(n) for n = 55518794 and 55518803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18520 + ... + 21307.

It is an arithmetic number, because the mean of its divisors is an integer number (5645619).

Almost surely, 2^55518838 is an apocalyptic number.

55518838 is a deficient number, since it is larger than the sum of its proper divisors (34811066).

55518838 is a wasteful number, since it uses less digits than its factorization.

55518838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39887.

The product of its digits is 192000, while the sum is 43.

The square root of 55518838 is about 7451.0964293854. The cubic root of 55518838 is about 381.4873334407.

The spelling of 55518838 in words is "fifty-five million, five hundred eighteen thousand, eight hundred thirty-eight".