15252493 has 4 divisors (see below), whose sum is σ = 15271228. Its totient is φ = 15233760.

The previous prime is 15252467. The next prime is 15252509. The reversal of 15252493 is 39425251.

15252493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39425251 = 149 ⋅264599.

It can be written as a sum of positive squares in 2 ways, for example, as 2883204 + 12369289 = 1698^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 15252493 - 2²¹ = 13155341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15252593) 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, 8088 + ... + 9793.

It is an arithmetic number, because the mean of its divisors is an integer number (3817807).

Almost surely, 2^15252493 is an apocalyptic number.

It is an amenable number.

15252493 is a deficient number, since it is larger than the sum of its proper divisors (18735).

15252493 is an equidigital number, since it uses as much as digits as its factorization.

15252493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18734.

The product of its digits is 10800, while the sum is 31.

The square root of 15252493 is about 3905.4440208509. Note that the first 3 decimals coincide. The cubic root of 15252493 is about 247.9972955394.

The spelling of 15252493 in words is "fifteen million, two hundred fifty-two thousand, four hundred ninety-three".