23561357 has 2 divisors, whose sum is σ = 23561358. Its totient is φ = 23561356.

The previous prime is 23561327. The next prime is 23561359. The reversal of 23561357 is 75316532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21659716 + 1901641 = 4654^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 23561357 - 2¹⁰ = 23560333 is a prime.

Together with 23561359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23561359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11780678 + 11780679.

It is an arithmetic number, because the mean of its divisors is an integer number (11780679).

Almost surely, 2^23561357 is an apocalyptic number.

It is an amenable number.

23561357 is a deficient number, since it is larger than the sum of its proper divisors (1).

23561357 is an equidigital number, since it uses as much as digits as its factorization.

23561357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 32.

The square root of 23561357 is about 4854.0042233191. The cubic root of 23561357 is about 286.6817850028.

Adding to 23561357 its reverse (75316532), we get a palindrome (98877889).

The spelling of 23561357 in words is "twenty-three million, five hundred sixty-one thousand, three hundred fifty-seven".