23274561 has 4 divisors (see below), whose sum is σ = 31032752. Its totient is φ = 15516372.

The previous prime is 23274557. The next prime is 23274569. The reversal of 23274561 is 16547232.

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 not a de Polignac number, because 23274561 - 2² = 23274557 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23274569) 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, 3879091 + ... + 3879096.

It is an arithmetic number, because the mean of its divisors is an integer number (7758188).

Almost surely, 2^23274561 is an apocalyptic number.

It is an amenable number.

23274561 is a deficient number, since it is larger than the sum of its proper divisors (7758191).

23274561 is an equidigital number, since it uses as much as digits as its factorization.

23274561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7758190.

The product of its digits is 10080, while the sum is 30.

The square root of 23274561 is about 4824.3715652922. The cubic root of 23274561 is about 285.5138406353.

The spelling of 23274561 in words is "twenty-three million, two hundred seventy-four thousand, five hundred sixty-one".