22235513 has 2 divisors, whose sum is σ = 22235514. Its totient is φ = 22235512.

The previous prime is 22235501. The next prime is 22235527. The reversal of 22235513 is 31553222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12730624 + 9504889 = 3568^2 + 3083^2 .

It is a cyclic number.

It is not a de Polignac number, because 22235513 - 2⁴ = 22235497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22235533) 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, 11117756 + 11117757.

It is an arithmetic number, because the mean of its divisors is an integer number (11117757).

Almost surely, 2^22235513 is an apocalyptic number.

It is an amenable number.

22235513 is a deficient number, since it is larger than the sum of its proper divisors (1).

22235513 is an equidigital number, since it uses as much as digits as its factorization.

22235513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 23.

The square root of 22235513 is about 4715.4546970573. The cubic root of 22235513 is about 281.2002599775.

Adding to 22235513 its reverse (31553222), we get a palindrome (53788735).

The spelling of 22235513 in words is "twenty-two million, two hundred thirty-five thousand, five hundred thirteen".