23146561 has 8 divisors (see below), whose sum is σ = 23548320. Its totient is φ = 22748448.

The previous prime is 23146559. The next prime is 23146577. The reversal of 23146561 is 16564132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23146561 - 2¹ = 23146559 is a prime.

It is a super-2 number, since 2×23146561² = 1071526572253442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23146961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13870 + ... + 15448.

It is an arithmetic number, because the mean of its divisors is an integer number (2943540).

Almost surely, 2^23146561 is an apocalyptic number.

It is an amenable number.

23146561 is a deficient number, since it is larger than the sum of its proper divisors (401759).

23146561 is a wasteful number, since it uses less digits than its factorization.

23146561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823.

The product of its digits is 4320, while the sum is 28.

The square root of 23146561 is about 4811.0872991456. The cubic root of 23146561 is about 284.9894773995.

The spelling of 23146561 in words is "twenty-three million, one hundred forty-six thousand, five hundred sixty-one".