97130777 has 2 divisors, whose sum is σ = 97130778. Its totient is φ = 97130776.

The previous prime is 97130767. The next prime is 97130779. The reversal of 97130777 is 77703179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60902416 + 36228361 = 7804^2 + 6019^2 .

It is a cyclic number.

It is not a de Polignac number, because 97130777 - 2¹⁴ = 97114393 is a prime.

Together with 97130779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97130779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48565388 + 48565389.

It is an arithmetic number, because the mean of its divisors is an integer number (48565389).

Almost surely, 2^97130777 is an apocalyptic number.

It is an amenable number.

97130777 is a deficient number, since it is larger than the sum of its proper divisors (1).

97130777 is an equidigital number, since it uses as much as digits as its factorization.

97130777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64827, while the sum is 41.

The square root of 97130777 is about 9855.4947618067. The cubic root of 97130777 is about 459.6764848775.

The spelling of 97130777 in words is "ninety-seven million, one hundred thirty thousand, seven hundred seventy-seven".