97288291 has 2 divisors, whose sum is σ = 97288292. Its totient is φ = 97288290.

The previous prime is 97288283. The next prime is 97288309. The reversal of 97288291 is 19288279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97288291 - 2³ = 97288283 is a prime.

It is not a weakly prime, because it can be changed into another prime (97288391) 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, 48644145 + 48644146.

It is an arithmetic number, because the mean of its divisors is an integer number (48644146).

Almost surely, 2^97288291 is an apocalyptic number.

97288291 is a deficient number, since it is larger than the sum of its proper divisors (1).

97288291 is an equidigital number, since it uses as much as digits as its factorization.

97288291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 46.

The square root of 97288291 is about 9863.4827013586. The cubic root of 97288291 is about 459.9248317629.

It can be divided in two parts, 97288 and 291, that added together give a palindrome (97579).

The spelling of 97288291 in words is "ninety-seven million, two hundred eighty-eight thousand, two hundred ninety-one".