253262591921 has 2 divisors, whose sum is σ = 253262591922. Its totient is φ = 253262591920.

The previous prime is 253262591903. The next prime is 253262591927. The reversal of 253262591921 is 129195262352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253246471696 + 16120225 = 503236^2 + 4015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253262591921 is a prime.

It is not a weakly prime, because it can be changed into another prime (253262591927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126631295960 + 126631295961.

It is an arithmetic number, because the mean of its divisors is an integer number (126631295961).

Almost surely, 2^253262591921 is an apocalyptic number.

It is an amenable number.

253262591921 is a deficient number, since it is larger than the sum of its proper divisors (1).

253262591921 is an equidigital number, since it uses as much as digits as its factorization.

253262591921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 47.

The spelling of 253262591921 in words is "two hundred fifty-three billion, two hundred sixty-two million, five hundred ninety-one thousand, nine hundred twenty-one".