253733253 has 4 divisors (see below), whose sum is σ = 338311008. Its totient is φ = 169155500.

The previous prime is 253733243. The next prime is 253733261. The reversal of 253733253 is 352337352.

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 253733253 - 2⁹ = 253732741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253733243) 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, 42288873 + ... + 42288878.

It is an arithmetic number, because the mean of its divisors is an integer number (84577752).

Almost surely, 2^253733253 is an apocalyptic number.

It is an amenable number.

253733253 is a deficient number, since it is larger than the sum of its proper divisors (84577755).

253733253 is an equidigital number, since it uses as much as digits as its factorization.

253733253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84577754.

The product of its digits is 56700, while the sum is 33.

The square root of 253733253 is about 15929.0066545281. The cubic root of 253733253 is about 633.0807805285.

It can be divided in two parts, 25 and 3733253, that added together give a triangular number (3733278 = T₂₇₃₂).

The spelling of 253733253 in words is "two hundred fifty-three million, seven hundred thirty-three thousand, two hundred fifty-three".