252908407 has 2 divisors, whose sum is σ = 252908408. Its totient is φ = 252908406.

The previous prime is 252908393. The next prime is 252908423. The reversal of 252908407 is 704809252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252908407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252908477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126454203 + 126454204.

It is an arithmetic number, because the mean of its divisors is an integer number (126454204).

Almost surely, 2^252908407 is an apocalyptic number.

252908407 is a deficient number, since it is larger than the sum of its proper divisors (1).

252908407 is an equidigital number, since it uses as much as digits as its factorization.

252908407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 252908407 is about 15903.0942586655. The cubic root of 252908407 is about 632.3940212069.

The spelling of 252908407 in words is "two hundred fifty-two million, nine hundred eight thousand, four hundred seven".