22291361 has 2 divisors, whose sum is σ = 22291362. Its totient is φ = 22291360.

The previous prime is 22291333. The next prime is 22291441. The reversal of 22291361 is 16319222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 9186961 = 3620^2 + 3031^2 .

It is a cyclic number.

It is not a de Polignac number, because 22291361 - 2¹⁰ = 22290337 is a prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 22291361.

It is not a weakly prime, because it can be changed into another prime (22291261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11145680 + 11145681.

It is an arithmetic number, because the mean of its divisors is an integer number (11145681).

Almost surely, 2^22291361 is an apocalyptic number.

It is an amenable number.

22291361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22291361 is an equidigital number, since it uses as much as digits as its factorization.

22291361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 22291361 is about 4721.3727876540. The cubic root of 22291361 is about 281.4354894255.

The spelling of 22291361 in words is "twenty-two million, two hundred ninety-one thousand, three hundred sixty-one".