15252791 has 4 divisors (see below), whose sum is σ = 16150032. Its totient is φ = 14355552.

The previous prime is 15252781. The next prime is 15252821. The reversal of 15252791 is 19725251.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15252791 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 (15252761) 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, 448595 + ... + 448628.

It is an arithmetic number, because the mean of its divisors is an integer number (4037508).

Almost surely, 2^15252791 is an apocalyptic number.

15252791 is a deficient number, since it is larger than the sum of its proper divisors (897241).

15252791 is an equidigital number, since it uses as much as digits as its factorization.

15252791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897240.

The product of its digits is 6300, while the sum is 32.

The square root of 15252791 is about 3905.4821725364. The cubic root of 15252791 is about 247.9989106352.

The spelling of 15252791 in words is "fifteen million, two hundred fifty-two thousand, seven hundred ninety-one".