22055867 has 2 divisors, whose sum is σ = 22055868.
Its totient is φ = 22055866.
The previous prime is 22055837. The next prime is 22055893. The reversal of 22055867 is 76855022.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 22055867 - 28 = 22055611 is a prime.
It is a super-2 number, since 2×220558672 = 972922538243378, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (22055807) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11027933 + 11027934.
It is an arithmetic number, because the mean of its divisors is an integer number (11027934).
Almost surely, 222055867 is an apocalyptic number.
22055867 is a deficient number, since it is larger than the sum of its proper divisors (1).
22055867 is an equidigital number, since it uses as much as digits as its factorization.
22055867 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 33600, while the sum is 35.
The square root of 22055867 is about 4696.3674260007.
The cubic root of 22055867 is about 280.4409167174.
It can be divided in two parts, 22055 and 867, that added together give a palindrome (22922).
The spelling of 22055867 in words is "twenty-two million, fifty-five thousand, eight hundred sixty-seven".