253252523921 has 2 divisors, whose sum is σ = 253252523922. Its totient is φ = 253252523920.

The previous prime is 253252523873. The next prime is 253252524017. The reversal of 253252523921 is 129325252352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176598295696 + 76654228225 = 420236^2 + 276865^2 .

It is a cyclic number.

It is not a de Polignac number, because 253252523921 - 2²² = 253248329617 is a prime.

It is not a weakly prime, because it can be changed into another prime (253552523921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126626261960 + 126626261961.

It is an arithmetic number, because the mean of its divisors is an integer number (126626261961).

Almost surely, 2^253252523921 is an apocalyptic number.

It is an amenable number.

253252523921 is a deficient number, since it is larger than the sum of its proper divisors (1).

253252523921 is an equidigital number, since it uses as much as digits as its factorization.

253252523921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 41.

The spelling of 253252523921 in words is "two hundred fifty-three billion, two hundred fifty-two million, five hundred twenty-three thousand, nine hundred twenty-one".