252663091 has 2 divisors, whose sum is σ = 252663092. Its totient is φ = 252663090.

The previous prime is 252663077. The next prime is 252663139. The reversal of 252663091 is 190366252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252663091 - 2¹¹ = 252661043 is a prime.

It is not a weakly prime, because it can be changed into another prime (252663011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126331545 + 126331546.

It is an arithmetic number, because the mean of its divisors is an integer number (126331546).

Almost surely, 2^252663091 is an apocalyptic number.

252663091 is a deficient number, since it is larger than the sum of its proper divisors (1).

252663091 is an equidigital number, since it uses as much as digits as its factorization.

252663091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 252663091 is about 15895.3795487871. The cubic root of 252663091 is about 632.1894852904.

The spelling of 252663091 in words is "two hundred fifty-two million, six hundred sixty-three thousand, ninety-one".