252440887 has 2 divisors, whose sum is σ = 252440888. Its totient is φ = 252440886.

The previous prime is 252440873. The next prime is 252440921. The reversal of 252440887 is 788044252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252440887 - 2¹¹ = 252438839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252440857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126220443 + 126220444.

It is an arithmetic number, because the mean of its divisors is an integer number (126220444).

Almost surely, 2^252440887 is an apocalyptic number.

252440887 is a deficient number, since it is larger than the sum of its proper divisors (1).

252440887 is an equidigital number, since it uses as much as digits as its factorization.

252440887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 252440887 is about 15888.3884330665. The cubic root of 252440887 is about 632.0041050513.

The spelling of 252440887 in words is "two hundred fifty-two million, four hundred forty thousand, eight hundred eighty-seven".