233022561 has 4 divisors (see below), whose sum is σ = 310696752. Its totient is φ = 155348372.

The previous prime is 233022551. The next prime is 233022571. The reversal of 233022561 is 165220332.

233022561 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 an interprime number because it is at equal distance from previous prime (233022551) and next prime (233022571).

It is a cyclic number.

It is not a de Polignac number, because 233022561 - 2⁵ = 233022529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (233022541) 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, 38837091 + ... + 38837096.

It is an arithmetic number, because the mean of its divisors is an integer number (77674188).

Almost surely, 2^233022561 is an apocalyptic number.

It is an amenable number.

233022561 is a deficient number, since it is larger than the sum of its proper divisors (77674191).

233022561 is an equidigital number, since it uses as much as digits as its factorization.

233022561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77674190.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 233022561 is about 15265.0765147116. The cubic root of 233022561 is about 615.3648096659.

Adding to 233022561 its reverse (165220332), we get a palindrome (398242893).

The spelling of 233022561 in words is "two hundred thirty-three million, twenty-two thousand, five hundred sixty-one".