253923157 has 2 divisors, whose sum is σ = 253923158. Its totient is φ = 253923156.

The previous prime is 253923133. The next prime is 253923161. The reversal of 253923157 is 751329352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149597361 + 104325796 = 12231^2 + 10214^2 .

It is a cyclic number.

It is not a de Polignac number, because 253923157 - 2⁷ = 253923029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253926157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126961578 + 126961579.

It is an arithmetic number, because the mean of its divisors is an integer number (126961579).

Almost surely, 2^253923157 is an apocalyptic number.

It is an amenable number.

253923157 is a deficient number, since it is larger than the sum of its proper divisors (1).

253923157 is an equidigital number, since it uses as much as digits as its factorization.

253923157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 37.

The square root of 253923157 is about 15934.9664888258. The cubic root of 253923157 is about 633.2386820386.

The spelling of 253923157 in words is "two hundred fifty-three million, nine hundred twenty-three thousand, one hundred fifty-seven".