22552681 has 2 divisors, whose sum is σ = 22552682. Its totient is φ = 22552680.

The previous prime is 22552679. The next prime is 22552697. The reversal of 22552681 is 18625522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21706281 + 846400 = 4659^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 22552681 - 2¹ = 22552679 is a prime.

It is a super-2 number, since 2×22552681² = 1017246840575522, which contains 22 as substring.

Together with 22552679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22552631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11276340 + 11276341.

It is an arithmetic number, because the mean of its divisors is an integer number (11276341).

Almost surely, 2^22552681 is an apocalyptic number.

It is an amenable number.

22552681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22552681 is an equidigital number, since it uses as much as digits as its factorization.

22552681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 31.

The square root of 22552681 is about 4748.9663085771. The cubic root of 22552681 is about 282.5309690120.

The spelling of 22552681 in words is "twenty-two million, five hundred fifty-two thousand, six hundred eighty-one".