22459861 has 2 divisors, whose sum is σ = 22459862. Its totient is φ = 22459860.

The previous prime is 22459859. The next prime is 22459897. The reversal of 22459861 is 16895422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 463761 = 4690^2 + 681^2 .

It is a cyclic number.

It is not a de Polignac number, because 22459861 - 2¹ = 22459859 is a prime.

It is a super-2 number, since 2×22459861² = 1008890712278642, which contains 22 as substring.

Together with 22459859, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22459861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22459361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11229930 + 11229931.

It is an arithmetic number, because the mean of its divisors is an integer number (11229931).

Almost surely, 2^22459861 is an apocalyptic number.

It is an amenable number.

22459861 is a deficient number, since it is larger than the sum of its proper divisors (1).

22459861 is an equidigital number, since it uses as much as digits as its factorization.

22459861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 22459861 is about 4739.1835794786. The cubic root of 22459861 is about 282.1428320919.

The spelling of 22459861 in words is "twenty-two million, four hundred fifty-nine thousand, eight hundred sixty-one".