22520497 has 2 divisors, whose sum is σ = 22520498. Its totient is φ = 22520496.

The previous prime is 22520479. The next prime is 22520507. The reversal of 22520497 is 79402522.

Together with previous prime (22520479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22240656 + 279841 = 4716^2 + 529^2 .

It is a cyclic number.

It is not a de Polignac number, because 22520497 - 2²³ = 14131889 is a prime.

It is not a weakly prime, because it can be changed into another prime (22520417) 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, 11260248 + 11260249.

It is an arithmetic number, because the mean of its divisors is an integer number (11260249).

Almost surely, 2^22520497 is an apocalyptic number.

It is an amenable number.

22520497 is a deficient number, since it is larger than the sum of its proper divisors (1).

22520497 is an equidigital number, since it uses as much as digits as its factorization.

22520497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 22520497 is about 4745.5765719246. The cubic root of 22520497 is about 282.3965089369.

The spelling of 22520497 in words is "twenty-two million, five hundred twenty thousand, four hundred ninety-seven".