252679657 has 2 divisors, whose sum is σ = 252679658. Its totient is φ = 252679656.

The previous prime is 252679631. The next prime is 252679709. The reversal of 252679657 is 756976252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227889216 + 24790441 = 15096^2 + 4979^2 .

It is a cyclic number.

It is not a de Polignac number, because 252679657 - 2⁷ = 252679529 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252679657.

It is not a weakly prime, because it can be changed into another prime (252679627) 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, 126339828 + 126339829.

It is an arithmetic number, because the mean of its divisors is an integer number (126339829).

Almost surely, 2^252679657 is an apocalyptic number.

It is an amenable number.

252679657 is a deficient number, since it is larger than the sum of its proper divisors (1).

252679657 is an equidigital number, since it uses as much as digits as its factorization.

252679657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 49.

The square root of 252679657 is about 15895.9006350694. The cubic root of 252679657 is about 632.2033016101.

The spelling of 252679657 in words is "two hundred fifty-two million, six hundred seventy-nine thousand, six hundred fifty-seven".