22085851 has 2 divisors, whose sum is σ = 22085852. Its totient is φ = 22085850.

The previous prime is 22085827. The next prime is 22085863. The reversal of 22085851 is 15858022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22085851 - 2⁹ = 22085339 is a prime.

It is a Chen prime.

It is equal to p_1394338 and since 22085851 and 1394338 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22085821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11042925 + 11042926.

It is an arithmetic number, because the mean of its divisors is an integer number (11042926).

Almost surely, 2^22085851 is an apocalyptic number.

22085851 is a deficient number, since it is larger than the sum of its proper divisors (1).

22085851 is an equidigital number, since it uses as much as digits as its factorization.

22085851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 22085851 is about 4699.5585962939. The cubic root of 22085851 is about 280.5679416172.

The spelling of 22085851 in words is "twenty-two million, eighty-five thousand, eight hundred fifty-one".