97297957 has 2 divisors, whose sum is σ = 97297958. Its totient is φ = 97297956.

The previous prime is 97297931. The next prime is 97297973. The reversal of 97297957 is 75979279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94984516 + 2313441 = 9746^2 + 1521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97297957 is a prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 97297898 and 97297907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97297927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48648978 + 48648979.

It is an arithmetic number, because the mean of its divisors is an integer number (48648979).

Almost surely, 2^97297957 is an apocalyptic number.

It is an amenable number.

97297957 is a deficient number, since it is larger than the sum of its proper divisors (1).

97297957 is an equidigital number, since it uses as much as digits as its factorization.

97297957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2500470, while the sum is 55.

The square root of 97297957 is about 9863.9726783888. The cubic root of 97297957 is about 459.9400630792.

The spelling of 97297957 in words is "ninety-seven million, two hundred ninety-seven thousand, nine hundred fifty-seven".