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22277 is a prime number

22277 has 2 divisors, whose sum is σ = 22278. Its totient is φ = 22276.

The previous prime is 22273. The next prime is 22279. The reversal of 22277 is 77222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21316 + 961 = 146^2 + 31^2 .

It is a cyclic number.

It is not a de Polignac number, because 22277 - 22 = 22273 is a prime.

Together with 22279, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p2495 and since 22277 and 2495 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11138 + 11139.

It is an arithmetic number, because the mean of its divisors is an integer number (11139).

222277 is an apocalyptic number.

It is an amenable number.

22277 is a deficient number, since it is larger than the sum of its proper divisors (1).

22277 is an equidigital number, since it uses as much as digits as its factorization.

22277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 392, while the sum is 20.

The square root of 22277 is about 149.2548156677. The cubic root of 22277 is about 28.1375039052.

Adding to 22277 its reverse (77222), we get a palindrome (99499).

Subtracting 22277 from its reverse (77222), we obtain a palindrome (54945).

It can be divided in two parts, 2 and 2277, that multiplied together give a palindrome (4554).

The spelling of 22277 in words is "twenty-two thousand, two hundred seventy-seven", and thus it is an iban number.