23282521 has 4 divisors (see below), whose sum is σ = 23677200. Its totient is φ = 22887844.

The previous prime is 23282491. The next prime is 23282549. The reversal of 23282521 is 12528232.

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 23282521 - 2²³ = 14893913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23282551) 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, 197251 + ... + 197368.

It is an arithmetic number, because the mean of its divisors is an integer number (5919300).

Almost surely, 2^23282521 is an apocalyptic number.

It is an amenable number.

23282521 is a deficient number, since it is larger than the sum of its proper divisors (394679).

23282521 is an equidigital number, since it uses as much as digits as its factorization.

23282521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394678.

The product of its digits is 1920, while the sum is 25.

The square root of 23282521 is about 4825.1964726838. The cubic root of 23282521 is about 285.5463859126.

The spelling of 23282521 in words is "twenty-three million, two hundred eighty-two thousand, five hundred twenty-one".