22772173 has 2 divisors, whose sum is σ = 22772174. Its totient is φ = 22772172.

The previous prime is 22772149. The next prime is 22772209. The reversal of 22772173 is 37127722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21511044 + 1261129 = 4638^2 + 1123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22772173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22772273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11386086 + 11386087.

It is an arithmetic number, because the mean of its divisors is an integer number (11386087).

Almost surely, 2^22772173 is an apocalyptic number.

It is an amenable number.

22772173 is a deficient number, since it is larger than the sum of its proper divisors (1).

22772173 is an equidigital number, since it uses as much as digits as its factorization.

22772173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232, while the sum is 31.

The square root of 22772173 is about 4772.0198029765. The cubic root of 22772173 is about 283.4445808433. Note that the first 3 decimals are identical.

Adding to 22772173 its reverse (37127722), we get a palindrome (59899895).

The spelling of 22772173 in words is "twenty-two million, seven hundred seventy-two thousand, one hundred seventy-three".