23561201 has 4 divisors (see below), whose sum is σ = 24947172. Its totient is φ = 22175232.

The previous prime is 23561191. The next prime is 23561207. The reversal of 23561201 is 10216532.

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 17430625 + 6130576 = 4175^2 + 2476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23561201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23561207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692960 + ... + 692993.

It is an arithmetic number, because the mean of its divisors is an integer number (6236793).

Almost surely, 2^23561201 is an apocalyptic number.

It is an amenable number.

23561201 is a deficient number, since it is larger than the sum of its proper divisors (1385971).

23561201 is a wasteful number, since it uses less digits than its factorization.

23561201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385970.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 23561201 is about 4853.9881540853. The cubic root of 23561201 is about 286.6811522937.

Adding to 23561201 its reverse (10216532), we get a palindrome (33777733).

The spelling of 23561201 in words is "twenty-three million, five hundred sixty-one thousand, two hundred one".