15264551521 has 2 divisors, whose sum is σ = 15264551522. Its totient is φ = 15264551520.

The previous prime is 15264551507. The next prime is 15264551579. The reversal of 15264551521 is 12515546251.

15264551521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10171731025 + 5092820496 = 100855^2 + 71364^2 .

It is a cyclic number.

It is not a de Polignac number, because 15264551521 - 2²⁷ = 15130333793 is a prime.

It is not a weakly prime, because it can be changed into another prime (15264551581) 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 as a sum of consecutive naturals, namely, 7632275760 + 7632275761.

It is an arithmetic number, because the mean of its divisors is an integer number (7632275761).

Almost surely, 2^15264551521 is an apocalyptic number.

It is an amenable number.

15264551521 is a deficient number, since it is larger than the sum of its proper divisors (1).

15264551521 is an equidigital number, since it uses as much as digits as its factorization.

15264551521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60000, while the sum is 37.

The spelling of 15264551521 in words is "fifteen billion, two hundred sixty-four million, five hundred fifty-one thousand, five hundred twenty-one".