22963561 has 2 divisors, whose sum is σ = 22963562. Its totient is φ = 22963560.

The previous prime is 22963559. The next prime is 22963597. The reversal of 22963561 is 16536922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20529961 + 2433600 = 4531^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 22963561 - 2¹ = 22963559 is a prime.

Together with 22963559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22963861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11481780 + 11481781.

It is an arithmetic number, because the mean of its divisors is an integer number (11481781).

Almost surely, 2^22963561 is an apocalyptic number.

It is an amenable number.

22963561 is a deficient number, since it is larger than the sum of its proper divisors (1).

22963561 is an equidigital number, since it uses as much as digits as its factorization.

22963561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 22963561 is about 4792.0309890484. The cubic root of 22963561 is about 284.2364335750.

The spelling of 22963561 in words is "twenty-two million, nine hundred sixty-three thousand, five hundred sixty-one".