15255064523 has 4 divisors (see below), whose sum is σ = 15390065208. Its totient is φ = 15120063840.

The previous prime is 15255064519. The next prime is 15255064541. The reversal of 15255064523 is 32546055251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32546055251 = 173 ⋅188127487.

It is a cyclic number.

It is not a de Polignac number, because 15255064523 - 2² = 15255064519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15255064553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67500173 + ... + 67500398.

It is an arithmetic number, because the mean of its divisors is an integer number (3847516302).

Almost surely, 2^15255064523 is an apocalyptic number.

15255064523 is a deficient number, since it is larger than the sum of its proper divisors (135000685).

15255064523 is a wasteful number, since it uses less digits than its factorization.

15255064523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135000684.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 15255064523 in words is "fifteen billion, two hundred fifty-five million, sixty-four thousand, five hundred twenty-three".