23563601 has 4 divisors (see below), whose sum is σ = 23578932. Its totient is φ = 23548272.

The previous prime is 23563583. The next prime is 23563607. The reversal of 23563601 is 10636532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5755201 + 17808400 = 2399^2 + 4220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23563601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23563607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5066 + ... + 8531.

It is an arithmetic number, because the mean of its divisors is an integer number (5894733).

Almost surely, 2^23563601 is an apocalyptic number.

It is an amenable number.

23563601 is a deficient number, since it is larger than the sum of its proper divisors (15331).

23563601 is a wasteful number, since it uses less digits than its factorization.

23563601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15330.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 23563601 is about 4854.2353671819. The cubic root of 23563601 is about 286.6908859713.

It can be divided in two parts, 235 and 63601, that added together give a palindrome (63836).

The spelling of 23563601 in words is "twenty-three million, five hundred sixty-three thousand, six hundred one".