23557361 has 2 divisors, whose sum is σ = 23557362. Its totient is φ = 23557360.

The previous prime is 23557349. The next prime is 23557381. The reversal of 23557361 is 16375532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23464336 + 93025 = 4844^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 23557361 - 2⁶ = 23557297 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23557381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11778680 + 11778681.

It is an arithmetic number, because the mean of its divisors is an integer number (11778681).

Almost surely, 2^23557361 is an apocalyptic number.

It is an amenable number.

23557361 is a deficient number, since it is larger than the sum of its proper divisors (1).

23557361 is an equidigital number, since it uses as much as digits as its factorization.

23557361 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23557361 is about 4853.5925869401. The cubic root of 23557361 is about 286.6655770345.

The spelling of 23557361 in words is "twenty-three million, five hundred fifty-seven thousand, three hundred sixty-one".