253900091 has 2 divisors, whose sum is σ = 253900092. Its totient is φ = 253900090.

The previous prime is 253900057. The next prime is 253900109. The reversal of 253900091 is 190009352.

Together with next prime (253900109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253900091 - 2⁶ = 253900027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (253900291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126950045 + 126950046.

It is an arithmetic number, because the mean of its divisors is an integer number (126950046).

Almost surely, 2^253900091 is an apocalyptic number.

253900091 is a deficient number, since it is larger than the sum of its proper divisors (1).

253900091 is an equidigital number, since it uses as much as digits as its factorization.

253900091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 253900091 is about 15934.2427181212. The cubic root of 253900091 is about 633.2195073062.

The spelling of 253900091 in words is "two hundred fifty-three million, nine hundred thousand, ninety-one".