22055777 has 2 divisors, whose sum is σ = 22055778. Its totient is φ = 22055776.

The previous prime is 22055771. The next prime is 22055807. The reversal of 22055777 is 77755022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20394256 + 1661521 = 4516^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 22055777 - 2⁸ = 22055521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22055771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11027888 + 11027889.

It is an arithmetic number, because the mean of its divisors is an integer number (11027889).

Almost surely, 2^22055777 is an apocalyptic number.

It is an amenable number.

22055777 is a deficient number, since it is larger than the sum of its proper divisors (1).

22055777 is an equidigital number, since it uses as much as digits as its factorization.

22055777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34300, while the sum is 35.

The square root of 22055777 is about 4696.3578441171. The cubic root of 22055777 is about 280.4405352661.

The spelling of 22055777 in words is "twenty-two million, fifty-five thousand, seven hundred seventy-seven".