22520957 has 2 divisors, whose sum is σ = 22520958. Its totient is φ = 22520956.

The previous prime is 22520941. The next prime is 22520959. The reversal of 22520957 is 75902522.

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., 15007876 + 7513081 = 3874^2 + 2741^2 .

It is a cyclic number.

It is not a de Polignac number, because 22520957 - 2⁴ = 22520941 is a prime.

Together with 22520959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22520959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260478 + 11260479.

It is an arithmetic number, because the mean of its divisors is an integer number (11260479).

Almost surely, 2^22520957 is an apocalyptic number.

It is an amenable number.

22520957 is a deficient number, since it is larger than the sum of its proper divisors (1).

22520957 is an equidigital number, since it uses as much as digits as its factorization.

22520957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 22520957 is about 4745.6250378638. The cubic root of 22520957 is about 282.3984316522.

The spelling of 22520957 in words is "twenty-two million, five hundred twenty thousand, nine hundred fifty-seven".