97116857 has 2 divisors, whose sum is σ = 97116858. Its totient is φ = 97116856.

The previous prime is 97116797. The next prime is 97116871. The reversal of 97116857 is 75861179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96904336 + 212521 = 9844^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 97116857 - 2⁶ = 97116793 is a prime.

It is not a weakly prime, because it can be changed into another prime (97116757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48558428 + 48558429.

It is an arithmetic number, because the mean of its divisors is an integer number (48558429).

Almost surely, 2^97116857 is an apocalyptic number.

It is an amenable number.

97116857 is a deficient number, since it is larger than the sum of its proper divisors (1).

97116857 is an equidigital number, since it uses as much as digits as its factorization.

97116857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 44.

The square root of 97116857 is about 9854.7885314704. The cubic root of 97116857 is about 459.6545247856.

The spelling of 97116857 in words is "ninety-seven million, one hundred sixteen thousand, eight hundred fifty-seven".