240456253 has 4 divisors (see below), whose sum is σ = 240804928. Its totient is φ = 240107580.

The previous prime is 240456241. The next prime is 240456257. The reversal of 240456253 is 352654042.

240456253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-240456253 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 (240456257) 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, 173301 + ... + 174682.

It is an arithmetic number, because the mean of its divisors is an integer number (60201232).

Almost surely, 2^240456253 is an apocalyptic number.

It is an amenable number.

240456253 is a deficient number, since it is larger than the sum of its proper divisors (348675).

240456253 is an equidigital number, since it uses as much as digits as its factorization.

240456253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348674.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 240456253 is about 15506.6518952352. The cubic root of 240456253 is about 621.8400530617.

The spelling of 240456253 in words is "two hundred forty million, four hundred fifty-six thousand, two hundred fifty-three".