252456791 has 2 divisors, whose sum is σ = 252456792. Its totient is φ = 252456790.

The previous prime is 252456751. The next prime is 252456793. The reversal of 252456791 is 197654252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252456791 - 2¹⁰ = 252455767 is a prime.

Together with 252456793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252456793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126228395 + 126228396.

It is an arithmetic number, because the mean of its divisors is an integer number (126228396).

Almost surely, 2^252456791 is an apocalyptic number.

252456791 is a deficient number, since it is larger than the sum of its proper divisors (1).

252456791 is an equidigital number, since it uses as much as digits as its factorization.

252456791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 252456791 is about 15888.8889164724. Note that the first 3 decimals coincide. The cubic root of 252456791 is about 632.0173770458.

The spelling of 252456791 in words is "two hundred fifty-two million, four hundred fifty-six thousand, seven hundred ninety-one".