22285871 has 2 divisors, whose sum is σ = 22285872. Its totient is φ = 22285870.

The previous prime is 22285859. The next prime is 22285883. The reversal of 22285871 is 17858222.

It is a balanced prime because it is at equal distance from previous prime (22285859) and next prime (22285883).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22285871 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22285171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11142935 + 11142936.

It is an arithmetic number, because the mean of its divisors is an integer number (11142936).

Almost surely, 2^22285871 is an apocalyptic number.

22285871 is a deficient number, since it is larger than the sum of its proper divisors (1).

22285871 is an equidigital number, since it uses as much as digits as its factorization.

22285871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 35.

The square root of 22285871 is about 4720.7913531526. The cubic root of 22285871 is about 281.4123831992.

The spelling of 22285871 in words is "twenty-two million, two hundred eighty-five thousand, eight hundred seventy-one".