82222997 has 2 divisors, whose sum is σ = 82222998. Its totient is φ = 82222996.

The previous prime is 82222979. The next prime is 82223023. The reversal of 82222997 is 79922228.

It is a happy number.

Together with previous prime (82222979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80982001 + 1240996 = 8999^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 82222997 - 2¹⁰ = 82221973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82222967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41111498 + 41111499.

It is an arithmetic number, because the mean of its divisors is an integer number (41111499).

Almost surely, 2^82222997 is an apocalyptic number.

It is an amenable number.

82222997 is a deficient number, since it is larger than the sum of its proper divisors (1).

82222997 is an equidigital number, since it uses as much as digits as its factorization.

82222997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 82222997 is about 9067.6897278193. The cubic root of 82222997 is about 434.8416158318.

The spelling of 82222997 in words is "eighty-two million, two hundred twenty-two thousand, nine hundred ninety-seven".