23075521 has 12 divisors (see below), whose sum is σ = 26925888. Its totient is φ = 19717992.

The previous prime is 23075491. The next prime is 23075539. The reversal of 23075521 is 12557032.

It is not a de Polignac number, because 23075521 - 2⁵ = 23075489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23075551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23380 + ... + 24346.

It is an arithmetic number, because the mean of its divisors is an integer number (2243824).

Almost surely, 2^23075521 is an apocalyptic number.

It is an amenable number.

23075521 is a deficient number, since it is larger than the sum of its proper divisors (3850367).

23075521 is an equidigital number, since it uses as much as digits as its factorization.

23075521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 23075521 is about 4803.6986791430. The cubic root of 23075521 is about 284.6976212270.

The spelling of 23075521 in words is "twenty-three million, seventy-five thousand, five hundred twenty-one".