15520245222 has 16 divisors (see below), whose sum is σ = 31070037312. Its totient is φ = 5168490600.

The previous prime is 15520245199. The next prime is 15520245229. The reversal of 15520245222 is 22254202551.

15520245222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15520245222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15520245229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1224288 + ... + 1236899.

It is an arithmetic number, because the mean of its divisors is an integer number (1941877332).

Almost surely, 2^15520245222 is an apocalyptic number.

15520245222 is an abundant number, since it is smaller than the sum of its proper divisors (15549792090).

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

15520245222 is a wasteful number, since it uses less digits than its factorization.

15520245222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462243.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 15520245222 its reverse (22254202551), we get a palindrome (37774447773).

The spelling of 15520245222 in words is "fifteen billion, five hundred twenty million, two hundred forty-five thousand, two hundred twenty-two".