252402257 has 2 divisors, whose sum is σ = 252402258. Its totient is φ = 252402256.

The previous prime is 252402239. The next prime is 252402259. The reversal of 252402257 is 752204252.

252402257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221444161 + 30958096 = 14881^2 + 5564^2 .

It is a cyclic number.

It is not a de Polignac number, because 252402257 - 2⁸ = 252402001 is a prime.

Together with 252402259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252402259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126201128 + 126201129.

It is an arithmetic number, because the mean of its divisors is an integer number (126201129).

Almost surely, 2^252402257 is an apocalyptic number.

It is an amenable number.

252402257 is a deficient number, since it is larger than the sum of its proper divisors (1).

252402257 is an equidigital number, since it uses as much as digits as its factorization.

252402257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 252402257 is about 15887.1727188950. The cubic root of 252402257 is about 631.9718657361.

The spelling of 252402257 in words is "two hundred fifty-two million, four hundred two thousand, two hundred fifty-seven".