97130861 has 2 divisors, whose sum is σ = 97130862. Its totient is φ = 97130860.

The previous prime is 97130857. The next prime is 97130921. The reversal of 97130861 is 16803179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55785961 + 41344900 = 7469^2 + 6430^2 .

It is a cyclic number.

It is not a de Polignac number, because 97130861 - 2² = 97130857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97135861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48565430 + 48565431.

It is an arithmetic number, because the mean of its divisors is an integer number (48565431).

Almost surely, 2^97130861 is an apocalyptic number.

It is an amenable number.

97130861 is a deficient number, since it is larger than the sum of its proper divisors (1).

97130861 is an equidigital number, since it uses as much as digits as its factorization.

97130861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 97130861 is about 9855.4990233879. The cubic root of 97130861 is about 459.6766173890.

The spelling of 97130861 in words is "ninety-seven million, one hundred thirty thousand, eight hundred sixty-one".