253121233 has 16 divisors (see below), whose sum is σ = 268655616. Its totient is φ = 238003920.

The previous prime is 253121221. The next prime is 253121299. The reversal of 253121233 is 332121352.

253121233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253121233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253121203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400828 + ... + 401458.

It is an arithmetic number, because the mean of its divisors is an integer number (16790976).

Almost surely, 2^253121233 is an apocalyptic number.

253121233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

253121233 is a deficient number, since it is larger than the sum of its proper divisors (15534383).

253121233 is a wasteful number, since it uses less digits than its factorization.

253121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924.

The product of its digits is 1080, while the sum is 22.

The square root of 253121233 is about 15909.7841908682. The cubic root of 253121233 is about 632.5713609747.

Adding to 253121233 its reverse (332121352), we get a palindrome (585242585).

The spelling of 253121233 in words is "two hundred fifty-three million, one hundred twenty-one thousand, two hundred thirty-three".