22165459 has 2 divisors, whose sum is σ = 22165460. Its totient is φ = 22165458.

The previous prime is 22165447. The next prime is 22165463. The reversal of 22165459 is 95456122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22165459 is a prime.

It is not a weakly prime, because it can be changed into another prime (22165439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11082729 + 11082730.

It is an arithmetic number, because the mean of its divisors is an integer number (11082730).

Almost surely, 2^22165459 is an apocalyptic number.

22165459 is a deficient number, since it is larger than the sum of its proper divisors (1).

22165459 is an equidigital number, since it uses as much as digits as its factorization.

22165459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The square root of 22165459 is about 4708.0207093852. The cubic root of 22165459 is about 280.9046378790.

The spelling of 22165459 in words is "twenty-two million, one hundred sixty-five thousand, four hundred fifty-nine".