253097591 has 2 divisors, whose sum is σ = 253097592. Its totient is φ = 253097590.

The previous prime is 253097567. The next prime is 253097623. The reversal of 253097591 is 195790352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253097591 - 2²⁶ = 185988727 is a prime.

It is equal to p_13839368 and since 253097591 and 13839368 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253097521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126548795 + 126548796.

It is an arithmetic number, because the mean of its divisors is an integer number (126548796).

Almost surely, 2^253097591 is an apocalyptic number.

253097591 is a deficient number, since it is larger than the sum of its proper divisors (1).

253097591 is an equidigital number, since it uses as much as digits as its factorization.

253097591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 253097591 is about 15909.0411716106. The cubic root of 253097591 is about 632.5516659093.

The spelling of 253097591 in words is "two hundred fifty-three million, ninety-seven thousand, five hundred ninety-one".