22272851 has 2 divisors, whose sum is σ = 22272852. Its totient is φ = 22272850.

The previous prime is 22272847. The next prime is 22272857. The reversal of 22272851 is 15827222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22272851 - 2² = 22272847 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22272857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11136425 + 11136426.

It is an arithmetic number, because the mean of its divisors is an integer number (11136426).

Almost surely, 2^22272851 is an apocalyptic number.

22272851 is a deficient number, since it is larger than the sum of its proper divisors (1).

22272851 is an equidigital number, since it uses as much as digits as its factorization.

22272851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

The square root of 22272851 is about 4719.4121455961. The cubic root of 22272851 is about 281.3575696510.

The spelling of 22272851 in words is "twenty-two million, two hundred seventy-two thousand, eight hundred fifty-one".