22881601 has 2 divisors, whose sum is σ = 22881602. Its totient is φ = 22881600.

The previous prime is 22881581. The next prime is 22881611. The reversal of 22881601 is 10618822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 8856576 = 3745^2 + 2976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22881601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22881601.

It is not a weakly prime, because it can be changed into another prime (22881611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11440800 + 11440801.

It is an arithmetic number, because the mean of its divisors is an integer number (11440801).

Almost surely, 2^22881601 is an apocalyptic number.

It is an amenable number.

22881601 is a deficient number, since it is larger than the sum of its proper divisors (1).

22881601 is an equidigital number, since it uses as much as digits as its factorization.

22881601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 22881601 is about 4783.4716472453. The cubic root of 22881601 is about 283.8978712659.

The spelling of 22881601 in words is "twenty-two million, eight hundred eighty-one thousand, six hundred one".