253921601 has 2 divisors, whose sum is σ = 253921602. Its totient is φ = 253921600.

The previous prime is 253921583. The next prime is 253921609. The reversal of 253921601 is 106129352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252969025 + 952576 = 15905^2 + 976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253921601 is a prime.

It is not a weakly prime, because it can be changed into another prime (253921609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126960800 + 126960801.

It is an arithmetic number, because the mean of its divisors is an integer number (126960801).

Almost surely, 2^253921601 is an apocalyptic number.

It is an amenable number.

253921601 is a deficient number, since it is larger than the sum of its proper divisors (1).

253921601 is an equidigital number, since it uses as much as digits as its factorization.

253921601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 253921601 is about 15934.9176653035. The cubic root of 253921601 is about 633.2373885745.

The spelling of 253921601 in words is "two hundred fifty-three million, nine hundred twenty-one thousand, six hundred one".