22521713 has 2 divisors, whose sum is σ = 22521714. Its totient is φ = 22521712.

The previous prime is 22521683. The next prime is 22521727. The reversal of 22521713 is 31712522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21003889 + 1517824 = 4583^2 + 1232^2 .

It is a cyclic number.

It is not a de Polignac number, because 22521713 - 2¹⁰ = 22520689 is a prime.

It is not a weakly prime, because it can be changed into another prime (22521743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260856 + 11260857.

It is an arithmetic number, because the mean of its divisors is an integer number (11260857).

Almost surely, 2^22521713 is an apocalyptic number.

It is an amenable number.

22521713 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521713 is an equidigital number, since it uses as much as digits as its factorization.

22521713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 23.

The square root of 22521713 is about 4745.7046895061. The cubic root of 22521713 is about 282.4015915360.

The spelling of 22521713 in words is "twenty-two million, five hundred twenty-one thousand, seven hundred thirteen".