55222431330 has 256 divisors, whose sum is σ = 152597053440. Its totient is φ = 12772488960.

The previous prime is 55222431311. The next prime is 55222431347. The reversal of 55222431330 is 3313422255.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 119270679 + ... + 119271141.

It is an arithmetic number, because the mean of its divisors is an integer number (596082240).

Almost surely, 2^55222431330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55222431330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76298526720).

55222431330 is an abundant number, since it is smaller than the sum of its proper divisors (97374622110).

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

55222431330 is a wasteful number, since it uses less digits than its factorization.

55222431330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 55222431330 its reverse (3313422255), we get a palindrome (58535853585).

The spelling of 55222431330 in words is "fifty-five billion, two hundred twenty-two million, four hundred thirty-one thousand, three hundred thirty".