253253257 has 4 divisors (see below), whose sum is σ = 253368016. Its totient is φ = 253138500.

The previous prime is 253253251. The next prime is 253253293. The reversal of 253253257 is 752352352.

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 a de Polignac number, because none of the positive numbers 2^k-253253257 is a prime.

It is a super-2 number, since 2×253253257² = 128274424362216098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253253251) 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, 54003 + ... + 58504.

It is an arithmetic number, because the mean of its divisors is an integer number (63342004).

Almost surely, 2^253253257 is an apocalyptic number.

It is an amenable number.

253253257 is a deficient number, since it is larger than the sum of its proper divisors (114759).

253253257 is a wasteful number, since it uses less digits than its factorization.

253253257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114758.

The product of its digits is 63000, while the sum is 34.

The square root of 253253257 is about 15913.9327948813. The cubic root of 253253257 is about 632.6813215716.

It can be divided in two parts, 25325 and 3257, that added together give a palindrome (28582).

The spelling of 253253257 in words is "two hundred fifty-three million, two hundred fifty-three thousand, two hundred fifty-seven".