253885397 has 2 divisors, whose sum is σ = 253885398. Its totient is φ = 253885396.

The previous prime is 253885369. The next prime is 253885403. The reversal of 253885397 is 793588352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181737361 + 72148036 = 13481^2 + 8494^2 .

It is a cyclic number.

It is not a de Polignac number, because 253885397 - 2²⁰ = 252836821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253885367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126942698 + 126942699.

It is an arithmetic number, because the mean of its divisors is an integer number (126942699).

Almost surely, 2^253885397 is an apocalyptic number.

It is an amenable number.

253885397 is a deficient number, since it is larger than the sum of its proper divisors (1).

253885397 is an equidigital number, since it uses as much as digits as its factorization.

253885397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 50.

The square root of 253885397 is about 15933.7816289794. The cubic root of 253885397 is about 633.2072915997.

The spelling of 253885397 in words is "two hundred fifty-three million, eight hundred eighty-five thousand, three hundred ninety-seven".