55522230 has 64 divisors (see below), whose sum is σ = 141239808. Its totient is φ = 13939200.

The previous prime is 55522223. The next prime is 55522249. The reversal of 55522230 is 3222555.

It is a self number, because there is not a number n which added to its sum of digits gives 55522230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45630 + ... + 46830.

It is an arithmetic number, because the mean of its divisors is an integer number (2206872).

Almost surely, 2^55522230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55522230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70619904).

55522230 is an abundant number, since it is smaller than the sum of its proper divisors (85717578).

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

55522230 is a wasteful number, since it uses less digits than its factorization.

55522230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 55522230 is about 7451.3240434167. The cubic root of 55522230 is about 381.4951024475.

Adding to 55522230 its reverse (3222555), we get a palindrome (58744785).

The spelling of 55522230 in words is "fifty-five million, five hundred twenty-two thousand, two hundred thirty".