22561337 has 2 divisors, whose sum is σ = 22561338. Its totient is φ = 22561336.

The previous prime is 22561313. The next prime is 22561349. The reversal of 22561337 is 73316522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12645136 + 9916201 = 3556^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 22561337 - 2¹⁴ = 22544953 is a prime.

It is a Chen prime.

It is equal to p_1422299 and since 22561337 and 1422299 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22521337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11280668 + 11280669.

It is an arithmetic number, because the mean of its divisors is an integer number (11280669).

Almost surely, 2^22561337 is an apocalyptic number.

It is an amenable number.

22561337 is a deficient number, since it is larger than the sum of its proper divisors (1).

22561337 is an equidigital number, since it uses as much as digits as its factorization.

22561337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 29.

The square root of 22561337 is about 4749.8775773698. The cubic root of 22561337 is about 282.5671106907.

Adding to 22561337 its reverse (73316522), we get a palindrome (95877859).

The spelling of 22561337 in words is "twenty-two million, five hundred sixty-one thousand, three hundred thirty-seven".