22198513 has 2 divisors, whose sum is σ = 22198514. Its totient is φ = 22198512.

The previous prime is 22198493. The next prime is 22198591. The reversal of 22198513 is 31589122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15186609 + 7011904 = 3897^2 + 2648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22198513 is a prime.

It is a super-2 number, since 2×22198513² = 985547958822338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22198313) 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, 11099256 + 11099257.

It is an arithmetic number, because the mean of its divisors is an integer number (11099257).

Almost surely, 2^22198513 is an apocalyptic number.

It is an amenable number.

22198513 is a deficient number, since it is larger than the sum of its proper divisors (1).

22198513 is an equidigital number, since it uses as much as digits as its factorization.

22198513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 22198513 is about 4711.5297940266. The cubic root of 22198513 is about 281.0442005250.

The spelling of 22198513 in words is "twenty-two million, one hundred ninety-eight thousand, five hundred thirteen".