97599221 has 2 divisors, whose sum is σ = 97599222. Its totient is φ = 97599220.

The previous prime is 97599197. The next prime is 97599277. The reversal of 97599221 is 12299579.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80748196 + 16851025 = 8986^2 + 4105^2 .

It is a cyclic number.

It is not a de Polignac number, because 97599221 - 2¹⁸ = 97337077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97599421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48799610 + 48799611.

It is an arithmetic number, because the mean of its divisors is an integer number (48799611).

Almost surely, 2^97599221 is an apocalyptic number.

It is an amenable number.

97599221 is a deficient number, since it is larger than the sum of its proper divisors (1).

97599221 is an equidigital number, since it uses as much as digits as its factorization.

97599221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 44.

The square root of 97599221 is about 9879.2318021190. The cubic root of 97599221 is about 460.4142786451.

The spelling of 97599221 in words is "ninety-seven million, five hundred ninety-nine thousand, two hundred twenty-one".