55222944 has 96 divisors (see below), whose sum is σ = 170222976. Its totient is φ = 15344640.

The previous prime is 55222901. The next prime is 55222957. The reversal of 55222944 is 44922255.

It is a tau number, because it is divible by the number of its divisors (96).

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, 23754 + ... + 25974.

It is an arithmetic number, because the mean of its divisors is an integer number (1773156).

Almost surely, 2^55222944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55222944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85111488).

55222944 is an abundant number, since it is smaller than the sum of its proper divisors (115000032).

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

55222944 is a wasteful number, since it uses less digits than its factorization.

55222944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278 (or 2270 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 55222944 is about 7431.2141672811. The cubic root of 55222944 is about 380.8083990568.

The spelling of 55222944 in words is "fifty-five million, two hundred twenty-two thousand, nine hundred forty-four".