23545147 has 2 divisors, whose sum is σ = 23545148. Its totient is φ = 23545146.

The previous prime is 23545139. The next prime is 23545177. The reversal of 23545147 is 74154532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23545147 - 2³ = 23545139 is a prime.

It is not a weakly prime, because it can be changed into another prime (23545177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11772573 + 11772574.

It is an arithmetic number, because the mean of its divisors is an integer number (11772574).

Almost surely, 2^23545147 is an apocalyptic number.

23545147 is a deficient number, since it is larger than the sum of its proper divisors (1).

23545147 is an equidigital number, since it uses as much as digits as its factorization.

23545147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 23545147 is about 4852.3341805774. The cubic root of 23545147 is about 286.6160250968.

Adding to 23545147 its reverse (74154532), we get a palindrome (97699679).

The spelling of 23545147 in words is "twenty-three million, five hundred forty-five thousand, one hundred forty-seven".