55101720522 has 16 divisors (see below), whose sum is σ = 110610099072. Its totient is φ = 18299463840.

The previous prime is 55101720521. The next prime is 55101720613. The reversal of 55101720522 is 22502710155.

It is a self number, because there is not a number n which added to its sum of digits gives 55101720522.

It is not an unprimeable number, because it can be changed into a prime (55101720521) 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, 16942323 + ... + 16945574.

It is an arithmetic number, because the mean of its divisors is an integer number (6913131192).

Almost surely, 2^55101720522 is an apocalyptic number.

55101720522 is an abundant number, since it is smaller than the sum of its proper divisors (55508378550).

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

55101720522 is a wasteful number, since it uses less digits than its factorization.

55101720522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33888173.

The product of its (nonzero) digits is 7000, while the sum is 30.

The spelling of 55101720522 in words is "fifty-five billion, one hundred one million, seven hundred twenty thousand, five hundred twenty-two".