23507 has 4 divisors (see below), whose sum is σ = 25656. Its totient is φ = 21360.

The previous prime is 23497. The next prime is 23509. The reversal of 23507 is 70532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23507 - 2⁸ = 23251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23509) 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, 1058 + ... + 1079.

It is an arithmetic number, because the mean of its divisors is an integer number (6414).

2²³⁵⁰⁷ is an apocalyptic number.

23507 is a deficient number, since it is larger than the sum of its proper divisors (2149).

23507 is a wasteful number, since it uses less digits than its factorization.

23507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 23507 is about 153.3199269502. The cubic root of 23507 is about 28.6461153104.

The spelling of 23507 in words is "twenty-three thousand, five hundred seven".