23539147 has 2 divisors, whose sum is σ = 23539148. Its totient is φ = 23539146.

The previous prime is 23539133. The next prime is 23539181. The reversal of 23539147 is 74193532.

It is an a-pointer prime, because the next prime (23539181) can be obtained adding 23539147 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23539147 - 2¹¹ = 23537099 is a prime.

It is not a weakly prime, because it can be changed into another prime (23519147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11769573 + 11769574.

It is an arithmetic number, because the mean of its divisors is an integer number (11769574).

Almost surely, 2^23539147 is an apocalyptic number.

23539147 is a deficient number, since it is larger than the sum of its proper divisors (1).

23539147 is an equidigital number, since it uses as much as digits as its factorization.

23539147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 23539147 is about 4851.7158820360. The cubic root of 23539147 is about 286.5916769477.

The spelling of 23539147 in words is "twenty-three million, five hundred thirty-nine thousand, one hundred forty-seven".