55211922 has 16 divisors (see below), whose sum is σ = 122693280. Its totient is φ = 18403956.

The previous prime is 55211921. The next prime is 55211941. The reversal of 55211922 is 22911255.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55211921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511168 + ... + 511275.

It is an arithmetic number, because the mean of its divisors is an integer number (7668330).

Almost surely, 2^55211922 is an apocalyptic number.

55211922 is an abundant number, since it is smaller than the sum of its proper divisors (67481358).

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

55211922 is a wasteful number, since it uses less digits than its factorization.

55211922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022454 (or 1022448 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 55211922 is about 7430.4725287158. The cubic root of 55211922 is about 380.7830620673.

The spelling of 55211922 in words is "fifty-five million, two hundred eleven thousand, nine hundred twenty-two".