22615013 has 2 divisors, whose sum is σ = 22615014. Its totient is φ = 22615012.

The previous prime is 22614967. The next prime is 22615051. The reversal of 22615013 is 31051622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21921124 + 693889 = 4682^2 + 833^2 .

It is a cyclic number.

It is not a de Polignac number, because 22615013 - 2¹⁰ = 22613989 is a prime.

It is a super-2 number, since 2×22615013² = 1022877625980338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22615513) 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, 11307506 + 11307507.

It is an arithmetic number, because the mean of its divisors is an integer number (11307507).

Almost surely, 2^22615013 is an apocalyptic number.

It is an amenable number.

22615013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22615013 is an equidigital number, since it uses as much as digits as its factorization.

22615013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 22615013 is about 4755.5244716014. The cubic root of 22615013 is about 282.7910197029.

Adding to 22615013 its reverse (31051622), we get a palindrome (53666635).

The spelling of 22615013 in words is "twenty-two million, six hundred fifteen thousand, thirteen".