252403979 has 2 divisors, whose sum is σ = 252403980. Its totient is φ = 252403978.

The previous prime is 252403933. The next prime is 252404051. The reversal of 252403979 is 979304252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252403979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252403079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126201989 + 126201990.

It is an arithmetic number, because the mean of its divisors is an integer number (126201990).

Almost surely, 2^252403979 is an apocalyptic number.

252403979 is a deficient number, since it is larger than the sum of its proper divisors (1).

252403979 is an equidigital number, since it uses as much as digits as its factorization.

252403979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 252403979 is about 15887.2269134673. The cubic root of 252403979 is about 631.9733029301.

The spelling of 252403979 in words is "two hundred fifty-two million, four hundred three thousand, nine hundred seventy-nine".