253759397 has 4 divisors (see below), whose sum is σ = 261945216. Its totient is φ = 245573580.

The previous prime is 253759393. The next prime is 253759399. The reversal of 253759397 is 793957352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253759397 - 2² = 253759393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253759393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4092863 + ... + 4092924.

It is an arithmetic number, because the mean of its divisors is an integer number (65486304).

Almost surely, 2^253759397 is an apocalyptic number.

It is an amenable number.

253759397 is a deficient number, since it is larger than the sum of its proper divisors (8185819).

253759397 is an equidigital number, since it uses as much as digits as its factorization.

253759397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8185818.

The product of its digits is 1786050, while the sum is 50.

The square root of 253759397 is about 15929.8272746443. The cubic root of 253759397 is about 633.1025234354.

The spelling of 253759397 in words is "two hundred fifty-three million, seven hundred fifty-nine thousand, three hundred ninety-seven".