23252333521 has 4 divisors (see below), whose sum is σ = 23253049072. Its totient is φ = 23251617972.

The previous prime is 23252333501. The next prime is 23252333543. The reversal of 23252333521 is 12533325232.

It is a happy number.

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 23252333521 - 2⁷ = 23252333393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23252333501) 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, 306591 + ... + 374836.

It is an arithmetic number, because the mean of its divisors is an integer number (5813262268).

Almost surely, 2^23252333521 is an apocalyptic number.

It is an amenable number.

23252333521 is a deficient number, since it is larger than the sum of its proper divisors (715551).

23252333521 is an equidigital number, since it uses as much as digits as its factorization.

23252333521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715550.

The product of its digits is 32400, while the sum is 31.

Adding to 23252333521 its reverse (12533325232), we get a palindrome (35785658753).

The spelling of 23252333521 in words is "twenty-three billion, two hundred fifty-two million, three hundred thirty-three thousand, five hundred twenty-one".