55228164 has 12 divisors (see below), whose sum is σ = 128865744. Its totient is φ = 18409384.

The previous prime is 55228163. The next prime is 55228169. The reversal of 55228164 is 46182255.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55228163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301162 + ... + 2301185.

It is an arithmetic number, because the mean of its divisors is an integer number (10738812).

Almost surely, 2^55228164 is an apocalyptic number.

It is an amenable number.

55228164 is an abundant number, since it is smaller than the sum of its proper divisors (73637580).

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

55228164 is a wasteful number, since it uses less digits than its factorization.

55228164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602354 (or 4602352 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 55228164 is about 7431.5653801874. The cubic root of 55228164 is about 380.8203974345.

The spelling of 55228164 in words is "fifty-five million, two hundred twenty-eight thousand, one hundred sixty-four".