55322256 has 80 divisors (see below), whose sum is σ = 161328960. Its totient is φ = 16181760.

The previous prime is 55322237. The next prime is 55322261. The reversal of 55322256 is 65222355.

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, 13506 + ... + 17118.

It is an arithmetic number, because the mean of its divisors is an integer number (2016612).

Almost surely, 2^55322256 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 55322256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80664480).

55322256 is an abundant number, since it is smaller than the sum of its proper divisors (106006704).

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

55322256 is a wasteful number, since it uses less digits than its factorization.

55322256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664 (or 3658 counting only the distinct ones).

The product of its digits is 18000, while the sum is 30.

The square root of 55322256 is about 7437.8932501079. The cubic root of 55322256 is about 381.0365421237.

Subtracting 55322256 from its reverse (65222355), we obtain a palindrome (9900099).

The spelling of 55322256 in words is "fifty-five million, three hundred twenty-two thousand, two hundred fifty-six".