22055687 has 2 divisors, whose sum is σ = 22055688. Its totient is φ = 22055686.

The previous prime is 22055669. The next prime is 22055701. The reversal of 22055687 is 78655022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22055687 - 2¹² = 22051591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22055617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11027843 + 11027844.

It is an arithmetic number, because the mean of its divisors is an integer number (11027844).

Almost surely, 2^22055687 is an apocalyptic number.

22055687 is a deficient number, since it is larger than the sum of its proper divisors (1).

22055687 is an equidigital number, since it uses as much as digits as its factorization.

22055687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 22055687 is about 4696.3482622140. The cubic root of 22055687 is about 280.4401538138.

The spelling of 22055687 in words is "twenty-two million, fifty-five thousand, six hundred eighty-seven".