22569961 has 2 divisors, whose sum is σ = 22569962. Its totient is φ = 22569960.

The previous prime is 22569949. The next prime is 22569973. The reversal of 22569961 is 16996522.

It is the 1940-th star number.

It is a balanced prime because it is at equal distance from previous prime (22569949) and next prime (22569973).

It can be written as a sum of positive squares in only one way, i.e., 20070400 + 2499561 = 4480^2 + 1581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22569961 is a prime.

It is not a weakly prime, because it can be changed into another prime (22569991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11284980 + 11284981.

It is an arithmetic number, because the mean of its divisors is an integer number (11284981).

Almost surely, 2^22569961 is an apocalyptic number.

It is an amenable number.

22569961 is a deficient number, since it is larger than the sum of its proper divisors (1).

22569961 is an equidigital number, since it uses as much as digits as its factorization.

22569961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 22569961 is about 4750.7853035051. The cubic root of 22569961 is about 282.6031095670.

The spelling of 22569961 in words is "twenty-two million, five hundred sixty-nine thousand, nine hundred sixty-one".