22277137 has 2 divisors, whose sum is σ = 22277138. Its totient is φ = 22277136.

The previous prime is 22277081. The next prime is 22277147. The reversal of 22277137 is 73177222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22240656 + 36481 = 4716^2 + 191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22277137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22277099 and 22277108.

It is not a weakly prime, because it can be changed into another prime (22277147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11138568 + 11138569.

It is an arithmetic number, because the mean of its divisors is an integer number (11138569).

Almost surely, 2^22277137 is an apocalyptic number.

It is an amenable number.

22277137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22277137 is an equidigital number, since it uses as much as digits as its factorization.

22277137 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 22277137 is about 4719.8662057308. The cubic root of 22277137 is about 281.3756158544.

The spelling of 22277137 in words is "twenty-two million, two hundred seventy-seven thousand, one hundred thirty-seven".