253457231 has 4 divisors (see below), whose sum is σ = 254163600. Its totient is φ = 252750864.

The previous prime is 253457219. The next prime is 253457249. The reversal of 253457231 is 132754352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253457231 - 2¹⁰ = 253456207 is a prime.

It is a super-2 number, since 2×253457231² = 128481135892374722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253457251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352646 + ... + 353363.

It is an arithmetic number, because the mean of its divisors is an integer number (63540900).

Almost surely, 2^253457231 is an apocalyptic number.

253457231 is a deficient number, since it is larger than the sum of its proper divisors (706369).

253457231 is an equidigital number, since it uses as much as digits as its factorization.

253457231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706368.

The product of its digits is 25200, while the sum is 32.

The square root of 253457231 is about 15920.3401659638. The cubic root of 253457231 is about 632.8511330224.

The spelling of 253457231 in words is "two hundred fifty-three million, four hundred fifty-seven thousand, two hundred thirty-one".