22222513 has 2 divisors, whose sum is σ = 22222514. Its totient is φ = 22222512.

The previous prime is 22222507. The next prime is 22222517. The reversal of 22222513 is 31522222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11614464 + 10608049 = 3408^2 + 3257^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222513 - 2⁵ = 22222481 is a prime.

It is not a weakly prime, because it can be changed into another prime (22222517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111256 + 11111257.

It is an arithmetic number, because the mean of its divisors is an integer number (11111257).

Almost surely, 2^22222513 is an apocalyptic number.

It is an amenable number.

22222513 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222513 is an equidigital number, since it uses as much as digits as its factorization.

22222513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 19.

The square root of 22222513 is about 4714.0760494502. The cubic root of 22222513 is about 281.1454480193.

Adding to 22222513 its reverse (31522222), we get a palindrome (53744735).

The spelling of 22222513 in words is "twenty-two million, two hundred twenty-two thousand, five hundred thirteen".