15151521055 has 32 divisors (see below), whose sum is σ = 20988730368. Its totient is φ = 10391673600.

The previous prime is 15151521029. The next prime is 15151521079. The reversal of 15151521055 is 55012515151.

It is a happy number.

It is not a de Polignac number, because 15151521055 - 2⁵ = 15151521023 is a prime.

It is a Duffinian number.

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, 5467 + ... + 174163.

It is an arithmetic number, because the mean of its divisors is an integer number (655897824).

Almost surely, 2^15151521055 is an apocalyptic number.

15151521055 is a deficient number, since it is larger than the sum of its proper divisors (5837209313).

15151521055 is a wasteful number, since it uses less digits than its factorization.

15151521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168807.

The product of its (nonzero) digits is 6250, while the sum is 31.

The spelling of 15151521055 in words is "fifteen billion, one hundred fifty-one million, five hundred twenty-one thousand, fifty-five".