222457897 has 2 divisors, whose sum is σ = 222457898. Its totient is φ = 222457896.

The previous prime is 222457867. The next prime is 222457901. The reversal of 222457897 is 798754222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122677776 + 99780121 = 11076^2 + 9989^2 .

It is a cyclic number.

It is not a de Polignac number, because 222457897 - 2⁷ = 222457769 is a prime.

It is not a weakly prime, because it can be changed into another prime (222457867) 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, 111228948 + 111228949.

It is an arithmetic number, because the mean of its divisors is an integer number (111228949).

Almost surely, 2^222457897 is an apocalyptic number.

It is an amenable number.

222457897 is a deficient number, since it is larger than the sum of its proper divisors (1).

222457897 is an equidigital number, since it uses as much as digits as its factorization.

222457897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 46.

The square root of 222457897 is about 14915.0225276397. The cubic root of 222457897 is about 605.9209133722.

The spelling of 222457897 in words is "two hundred twenty-two million, four hundred fifty-seven thousand, eight hundred ninety-seven".