23005547 has 2 divisors, whose sum is σ = 23005548. Its totient is φ = 23005546.

The previous prime is 23005537. The next prime is 23005571. The reversal of 23005547 is 74550032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23005547 - 2⁴ = 23005531 is a prime.

It is not a weakly prime, because it can be changed into another prime (23005517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11502773 + 11502774.

It is an arithmetic number, because the mean of its divisors is an integer number (11502774).

Almost surely, 2^23005547 is an apocalyptic number.

23005547 is a deficient number, since it is larger than the sum of its proper divisors (1).

23005547 is an equidigital number, since it uses as much as digits as its factorization.

23005547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 23005547 is about 4796.4098031757. The cubic root of 23005547 is about 284.4095583651.

Adding to 23005547 its reverse (74550032), we get a palindrome (97555579).

The spelling of 23005547 in words is "twenty-three million, five thousand, five hundred forty-seven".