15252923857 has 8 divisors (see below), whose sum is σ = 15310368416. Its totient is φ = 15195585312.

The previous prime is 15252923783. The next prime is 15252923887. The reversal of 15252923857 is 75832925251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15252923857 - 2²³ = 15244535249 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 15252923857.

It is not an unprimeable number, because it can be changed into a prime (15252923887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267898 + ... + 319804.

It is an arithmetic number, because the mean of its divisors is an integer number (1913796052).

Almost surely, 2^15252923857 is an apocalyptic number.

It is an amenable number.

15252923857 is a deficient number, since it is larger than the sum of its proper divisors (57444559).

15252923857 is an equidigital number, since it uses as much as digits as its factorization.

15252923857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53007.

The product of its digits is 1512000, while the sum is 49.

The spelling of 15252923857 in words is "fifteen billion, two hundred fifty-two million, nine hundred twenty-three thousand, eight hundred fifty-seven".