55225885 has 16 divisors (see below), whose sum is σ = 77857920. Its totient is φ = 37074240.

The previous prime is 55225861. The next prime is 55225897. The reversal of 55225885 is 58852255.

It is a happy number.

It is not a de Polignac number, because 55225885 - 2⁷ = 55225757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37905 + ... + 39334.

It is an arithmetic number, because the mean of its divisors is an integer number (4866120).

Almost surely, 2^55225885 is an apocalyptic number.

55225885 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55225885 is a deficient number, since it is larger than the sum of its proper divisors (22632035).

55225885 is a wasteful number, since it uses less digits than its factorization.

55225885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77268.

The product of its digits is 160000, while the sum is 40.

The square root of 55225885 is about 7431.4120461727. The cubic root of 55225885 is about 380.8151591553.

The spelling of 55225885 in words is "fifty-five million, two hundred twenty-five thousand, eight hundred eighty-five".