55518823 has 16 divisors (see below), whose sum is σ = 58212000. Its totient is φ = 52918272.

The previous prime is 55518761. The next prime is 55518829. The reversal of 55518823 is 32881555.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55518823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55518829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509293 + ... + 509401.

It is an arithmetic number, because the mean of its divisors is an integer number (3638250).

Almost surely, 2^55518823 is an apocalyptic number.

55518823 is a deficient number, since it is larger than the sum of its proper divisors (2693177).

55518823 is a wasteful number, since it uses less digits than its factorization.

55518823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354.

The product of its digits is 48000, while the sum is 37.

The square root of 55518823 is about 7451.0954228221. The cubic root of 55518823 is about 381.4872990841.

The spelling of 55518823 in words is "fifty-five million, five hundred eighteen thousand, eight hundred twenty-three".