97280291 has 2 divisors, whose sum is σ = 97280292. Its totient is φ = 97280290.

The previous prime is 97280269. The next prime is 97280327. The reversal of 97280291 is 19208279.

It is a weak prime.

It is an emirp because it is prime and its reverse (19208279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97280291 - 2¹⁰ = 97279267 is a prime.

It is not a weakly prime, because it can be changed into another prime (97280251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48640145 + 48640146.

It is an arithmetic number, because the mean of its divisors is an integer number (48640146).

Almost surely, 2^97280291 is an apocalyptic number.

97280291 is a deficient number, since it is larger than the sum of its proper divisors (1).

97280291 is an equidigital number, since it uses as much as digits as its factorization.

97280291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 97280291 is about 9863.0771567498. The cubic root of 97280291 is about 459.9122249031.

The spelling of 97280291 in words is "ninety-seven million, two hundred eighty thousand, two hundred ninety-one".