23642501 has 4 divisors (see below), whose sum is σ = 23815212. Its totient is φ = 23469792.

The previous prime is 23642477. The next prime is 23642513. The reversal of 23642501 is 10524632.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10144225 + 13498276 = 3185^2 + 3674^2 .

It is a cyclic number.

It is not a de Polignac number, because 23642501 - 2¹⁴ = 23626117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23642581) 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, 86150 + ... + 86423.

It is an arithmetic number, because the mean of its divisors is an integer number (5953803).

Almost surely, 2^23642501 is an apocalyptic number.

It is an amenable number.

23642501 is a deficient number, since it is larger than the sum of its proper divisors (172711).

23642501 is a wasteful number, since it uses less digits than its factorization.

23642501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172710.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23642501 is about 4862.3554991383. The cubic root of 23642501 is about 287.0105132790.

The spelling of 23642501 in words is "twenty-three million, six hundred forty-two thousand, five hundred one".