23997501 has 12 divisors (see below), whose sum is σ = 37814400. Its totient is φ = 14543880.

The previous prime is 23997481. The next prime is 23997511. The reversal of 23997501 is 10579932.

It is not a de Polignac number, because 23997501 - 2⁵ = 23997469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23997511) 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, 121101 + ... + 121298.

It is an arithmetic number, because the mean of its divisors is an integer number (3151200).

Almost surely, 2^23997501 is an apocalyptic number.

It is an amenable number.

23997501 is a deficient number, since it is larger than the sum of its proper divisors (13816899).

23997501 is a wasteful number, since it uses less digits than its factorization.

23997501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242416 (or 242413 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 23997501 is about 4898.7244258072. The cubic root of 23997501 is about 288.4399020982.

Subtracting from 23997501 its reverse (10579932), we obtain a square (13417569 = 3663²).

The spelling of 23997501 in words is "twenty-three million, nine hundred ninety-seven thousand, five hundred one".