22135517 has 2 divisors, whose sum is σ = 22135518. Its totient is φ = 22135516.

The previous prime is 22135507. The next prime is 22135537. The reversal of 22135517 is 71553122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17422276 + 4713241 = 4174^2 + 2171^2 .

It is a cyclic number.

It is not a de Polignac number, because 22135517 - 2¹⁴ = 22119133 is a prime.

It is a super-2 number, since 2×22135517² = 979962225714578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22135507) 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, 11067758 + 11067759.

It is an arithmetic number, because the mean of its divisors is an integer number (11067759).

Almost surely, 2^22135517 is an apocalyptic number.

It is an amenable number.

22135517 is a deficient number, since it is larger than the sum of its proper divisors (1).

22135517 is an equidigital number, since it uses as much as digits as its factorization.

22135517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 26.

The square root of 22135517 is about 4704.8397422229. The cubic root of 22135517 is about 280.7780950938.

Adding to 22135517 its reverse (71553122), we get a palindrome (93688639).

The spelling of 22135517 in words is "twenty-two million, one hundred thirty-five thousand, five hundred seventeen".