13722277 has 2 divisors, whose sum is σ = 13722278. Its totient is φ = 13722276.

The previous prime is 13722239. The next prime is 13722311. The reversal of 13722277 is 77222731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12047841 + 1674436 = 3471^2 + 1294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13722277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13722217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6861138 + 6861139.

It is an arithmetic number, because the mean of its divisors is an integer number (6861139).

Almost surely, 2^13722277 is an apocalyptic number.

It is an amenable number.

13722277 is a deficient number, since it is larger than the sum of its proper divisors (1).

13722277 is an equidigital number, since it uses as much as digits as its factorization.

13722277 is an odious number, because the sum of its binary digits is odd.

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

The square root of 13722277 is about 3704.3591888476. The cubic root of 13722277 is about 239.4098753914.

The spelling of 13722277 in words is "thirteen million, seven hundred twenty-two thousand, two hundred seventy-seven".