23540251 has 16 divisors (see below), whose sum is σ = 27944896. Its totient is φ = 19408896.

The previous prime is 23540243. The next prime is 23540261. The reversal of 23540251 is 15204532.

It is a cyclic number.

It is not a de Polignac number, because 23540251 - 2³ = 23540243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23540261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24655 + ... + 25591.

It is an arithmetic number, because the mean of its divisors is an integer number (1746556).

Almost surely, 2^23540251 is an apocalyptic number.

23540251 is a deficient number, since it is larger than the sum of its proper divisors (4404645).

23540251 is an equidigital number, since it uses as much as digits as its factorization.

23540251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23540251 is about 4851.8296548828. The cubic root of 23540251 is about 286.5961573177.

Adding to 23540251 its reverse (15204532), we get a palindrome (38744783).

The spelling of 23540251 in words is "twenty-three million, five hundred forty thousand, two hundred fifty-one".