22520807 has 2 divisors, whose sum is σ = 22520808. Its totient is φ = 22520806.

The previous prime is 22520803. The next prime is 22520809. The reversal of 22520807 is 70802522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22520807 - 2² = 22520803 is a prime.

Together with 22520809, 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 (22520803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260403 + 11260404.

It is an arithmetic number, because the mean of its divisors is an integer number (11260404).

Almost surely, 2^22520807 is an apocalyptic number.

22520807 is a deficient number, since it is larger than the sum of its proper divisors (1).

22520807 is an equidigital number, since it uses as much as digits as its factorization.

22520807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 22520807 is about 4745.6092338076. The cubic root of 22520807 is about 282.3978046827.

The spelling of 22520807 in words is "twenty-two million, five hundred twenty thousand, eight hundred seven".