15001222055 has 4 divisors (see below), whose sum is σ = 18001466472. Its totient is φ = 12000977640.

The previous prime is 15001222043. The next prime is 15001222087. The reversal of 15001222055 is 55022210051.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15001222055 - 2¹⁶ = 15001156519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15001222055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500122201 + ... + 1500122210.

It is an arithmetic number, because the mean of its divisors is an integer number (4500366618).

Almost surely, 2^15001222055 is an apocalyptic number.

15001222055 is a deficient number, since it is larger than the sum of its proper divisors (3000244417).

15001222055 is an equidigital number, since it uses as much as digits as its factorization.

15001222055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000244416.

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 15001222055 in words is "fifteen billion, one million, two hundred twenty-two thousand, fifty-five".