55221130230 has 64 divisors (see below), whose sum is σ = 153946718208. Its totient is φ = 12415052160.

The previous prime is 55221130121. The next prime is 55221130331. The reversal of 55221130230 is 3203112255.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55221130230.

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, 2142582 + ... + 2168201.

It is an arithmetic number, because the mean of its divisors is an integer number (2405417472).

Almost surely, 2^55221130230 is an apocalyptic number.

55221130230 is an abundant number, since it is smaller than the sum of its proper divisors (98725587978).

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

55221130230 is a wasteful number, since it uses less digits than its factorization.

55221130230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310861.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 55221130230 its reverse (3203112255), we get a palindrome (58424242485).

The spelling of 55221130230 in words is "fifty-five billion, two hundred twenty-one million, one hundred thirty thousand, two hundred thirty".