1252592791 has 4 divisors (see below), whose sum is σ = 1252919752. Its totient is φ = 1252265832.

The previous prime is 1252592779. The next prime is 1252592797. The reversal of 1252592791 is 1972952521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1972952521 = 4751 ⋅415271.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252592791 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 (1252592797) 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, 157665 + ... + 165418.

It is an arithmetic number, because the mean of its divisors is an integer number (313229938).

Almost surely, 2^1252592791 is an apocalyptic number.

1252592791 is a deficient number, since it is larger than the sum of its proper divisors (326961).

1252592791 is an equidigital number, since it uses as much as digits as its factorization.

1252592791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326960.

The product of its digits is 113400, while the sum is 43.

The square root of 1252592791 is about 35391.9876667022. The cubic root of 1252592791 is about 1077.9616304957.

The spelling of 1252592791 in words is "one billion, two hundred fifty-two million, five hundred ninety-two thousand, seven hundred ninety-one".