23540051 has 4 divisors (see below), whose sum is σ = 23568192. Its totient is φ = 23511912.

The previous prime is 23540039. The next prime is 23540059. The reversal of 23540051 is 15004532.

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 23540051 - 2⁶ = 23539987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23540059) 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 3 ways as a sum of consecutive naturals, for example, 12776 + ... + 14501.

It is an arithmetic number, because the mean of its divisors is an integer number (5892048).

Almost surely, 2^23540051 is an apocalyptic number.

23540051 is a deficient number, since it is larger than the sum of its proper divisors (28141).

23540051 is an equidigital number, since it uses as much as digits as its factorization.

23540051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28140.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 23540051 is about 4851.8090440577. The cubic root of 23540051 is about 286.5953456669.

Adding to 23540051 its reverse (15004532), we get a palindrome (38544583).

The spelling of 23540051 in words is "twenty-three million, five hundred forty thousand, fifty-one".