97206157 has 2 divisors, whose sum is σ = 97206158. Its totient is φ = 97206156.

The previous prime is 97206139. The next prime is 97206163. The reversal of 97206157 is 75160279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84382596 + 12823561 = 9186^2 + 3581^2 .

It is an emirp because it is prime and its reverse (75160279) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97206157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97206107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48603078 + 48603079.

It is an arithmetic number, because the mean of its divisors is an integer number (48603079).

Almost surely, 2^97206157 is an apocalyptic number.

It is an amenable number.

97206157 is a deficient number, since it is larger than the sum of its proper divisors (1).

97206157 is an equidigital number, since it uses as much as digits as its factorization.

97206157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 97206157 is about 9859.3182827212. The cubic root of 97206157 is about 459.7953673941.

The spelling of 97206157 in words is "ninety-seven million, two hundred six thousand, one hundred fifty-seven".