22496561 has 2 divisors, whose sum is σ = 22496562. Its totient is φ = 22496560.

The previous prime is 22496557. The next prime is 22496567. The reversal of 22496561 is 16569422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19855936 + 2640625 = 4456^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 22496561 - 2² = 22496557 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22496567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11248280 + 11248281.

It is an arithmetic number, because the mean of its divisors is an integer number (11248281).

Almost surely, 2^22496561 is an apocalyptic number.

It is an amenable number.

22496561 is a deficient number, since it is larger than the sum of its proper divisors (1).

22496561 is an equidigital number, since it uses as much as digits as its factorization.

22496561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 22496561 is about 4743.0539739708. The cubic root of 22496561 is about 282.2964247185.

The spelling of 22496561 in words is "twenty-two million, four hundred ninety-six thousand, five hundred sixty-one".