22258813 has 2 divisors, whose sum is σ = 22258814. Its totient is φ = 22258812.

The previous prime is 22258783. The next prime is 22258843. The reversal of 22258813 is 31885222.

It is a balanced prime because it is at equal distance from previous prime (22258783) and next prime (22258843).

It can be written as a sum of positive squares in only one way, i.e., 21548164 + 710649 = 4642^2 + 843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22258813 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22258843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11129406 + 11129407.

It is an arithmetic number, because the mean of its divisors is an integer number (11129407).

Almost surely, 2^22258813 is an apocalyptic number.

It is an amenable number.

22258813 is a deficient number, since it is larger than the sum of its proper divisors (1).

22258813 is an equidigital number, since it uses as much as digits as its factorization.

22258813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 31.

The square root of 22258813 is about 4717.9246496738. The cubic root of 22258813 is about 281.2984464363.

The spelling of 22258813 in words is "twenty-two million, two hundred fifty-eight thousand, eight hundred thirteen".