23507563 has 2 divisors, whose sum is σ = 23507564. Its totient is φ = 23507562.

The previous prime is 23507551. The next prime is 23507569. The reversal of 23507563 is 36570532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23507563 - 2⁵ = 23507531 is a prime.

It is not a weakly prime, because it can be changed into another prime (23507569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11753781 + 11753782.

It is an arithmetic number, because the mean of its divisors is an integer number (11753782).

Almost surely, 2^23507563 is an apocalyptic number.

23507563 is a deficient number, since it is larger than the sum of its proper divisors (1).

23507563 is an equidigital number, since it uses as much as digits as its factorization.

23507563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 23507563 is about 4848.4598585530. The cubic root of 23507563 is about 286.4634400300.

The spelling of 23507563 in words is "twenty-three million, five hundred seven thousand, five hundred sixty-three".