23007251 has 4 divisors (see below), whose sum is σ = 23153952. Its totient is φ = 22860552.

The previous prime is 23007241. The next prime is 23007253. The reversal of 23007251 is 15270032.

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 23007251 - 2¹⁰ = 23006227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23007253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73115 + ... + 73428.

It is an arithmetic number, because the mean of its divisors is an integer number (5788488).

Almost surely, 2^23007251 is an apocalyptic number.

23007251 is a deficient number, since it is larger than the sum of its proper divisors (146701).

23007251 is a wasteful number, since it uses less digits than its factorization.

23007251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146700.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 23007251 is about 4796.5874327484. The cubic root of 23007251 is about 284.4165801777.

Adding to 23007251 its reverse (15270032), we get a palindrome (38277283).

The spelling of 23007251 in words is "twenty-three million, seven thousand, two hundred fifty-one".