23801563 has 2 divisors, whose sum is σ = 23801564. Its totient is φ = 23801562.

The previous prime is 23801551. The next prime is 23801587. The reversal of 23801563 is 36510832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23801563 - 2²¹ = 21704411 is a prime.

It is not a weakly prime, because it can be changed into another prime (23801363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11900781 + 11900782.

It is an arithmetic number, because the mean of its divisors is an integer number (11900782).

Almost surely, 2^23801563 is an apocalyptic number.

23801563 is a deficient number, since it is larger than the sum of its proper divisors (1).

23801563 is an equidigital number, since it uses as much as digits as its factorization.

23801563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 23801563 is about 4878.6845563123. The cubic root of 23801563 is about 287.6527249047.

The spelling of 23801563 in words is "twenty-three million, eight hundred one thousand, five hundred sixty-three".