15245521551 has 48 divisors (see below), whose sum is σ = 24386479936. Its totient is φ = 9116955648.

The previous prime is 15245521517. The next prime is 15245521573. The reversal of 15245521551 is 15512554251.

15245521551 is a `hidden beast` number, since 1 + 52 + 4 + 5 + 52 + 1 + 551 = 666.

15245521551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15245521551 - 2²⁶ = 15178412687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15245521591) 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 47 ways as a sum of consecutive naturals, for example, 4600071 + ... + 4603383.

Almost surely, 2^15245521551 is an apocalyptic number.

15245521551 is a deficient number, since it is larger than the sum of its proper divisors (9140958385).

15245521551 is a wasteful number, since it uses less digits than its factorization.

15245521551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432 (or 4429 counting only the distinct ones).

The product of its digits is 50000, while the sum is 36.

The spelling of 15245521551 in words is "fifteen billion, two hundred forty-five million, five hundred twenty-one thousand, five hundred fifty-one".