55422918 has 24 divisors (see below), whose sum is σ = 121533048. Its totient is φ = 18251232.

The previous prime is 55422911. The next prime is 55422919. The reversal of 55422918 is 81922455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55422911) 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, 17055 + ... + 20042.

It is an arithmetic number, because the mean of its divisors is an integer number (5063877).

Almost surely, 2^55422918 is an apocalyptic number.

55422918 is an abundant number, since it is smaller than the sum of its proper divisors (66110130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55422918 is a wasteful number, since it uses less digits than its factorization.

55422918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37188 (or 37185 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 55422918 is about 7444.6570102322. The cubic root of 55422918 is about 381.2675080019.

The spelling of 55422918 in words is "fifty-five million, four hundred twenty-two thousand, nine hundred eighteen".