22282861 has 2 divisors, whose sum is σ = 22282862. Its totient is φ = 22282860.

The previous prime is 22282859. The next prime is 22282879. The reversal of 22282861 is 16828222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19307236 + 2975625 = 4394^2 + 1725^2 .

It is a cyclic number.

It is not a de Polignac number, because 22282861 - 2¹ = 22282859 is a prime.

Together with 22282859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22282891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11141430 + 11141431.

It is an arithmetic number, because the mean of its divisors is an integer number (11141431).

Almost surely, 2^22282861 is an apocalyptic number.

It is an amenable number.

22282861 is a deficient number, since it is larger than the sum of its proper divisors (1).

22282861 is an equidigital number, since it uses as much as digits as its factorization.

22282861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 31.

The square root of 22282861 is about 4720.4725399053. The cubic root of 22282861 is about 281.3997131475.

The spelling of 22282861 in words is "twenty-two million, two hundred eighty-two thousand, eight hundred sixty-one".