22853821 has 2 divisors, whose sum is σ = 22853822. Its totient is φ = 22853820.

The previous prime is 22853813. The next prime is 22853837. The reversal of 22853821 is 12835822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22221796 + 632025 = 4714^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 22853821 - 2³ = 22853813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22853021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11426910 + 11426911.

It is an arithmetic number, because the mean of its divisors is an integer number (11426911).

Almost surely, 2^22853821 is an apocalyptic number.

It is an amenable number.

22853821 is a deficient number, since it is larger than the sum of its proper divisors (1).

22853821 is an equidigital number, since it uses as much as digits as its factorization.

22853821 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22853821 is about 4780.5670165787. The cubic root of 22853821 is about 283.7829335525.

The spelling of 22853821 in words is "twenty-two million, eight hundred fifty-three thousand, eight hundred twenty-one".