97238857 has 2 divisors, whose sum is σ = 97238858. Its totient is φ = 97238856.

The previous prime is 97238833. The next prime is 97238879. The reversal of 97238857 is 75883279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66977856 + 30261001 = 8184^2 + 5501^2 .

It is a cyclic number.

It is not a de Polignac number, because 97238857 - 2¹⁵ = 97206089 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97238857.

It is not a weakly prime, because it can be changed into another prime (97238807) 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, 48619428 + 48619429.

It is an arithmetic number, because the mean of its divisors is an integer number (48619429).

Almost surely, 2^97238857 is an apocalyptic number.

It is an amenable number.

97238857 is a deficient number, since it is larger than the sum of its proper divisors (1).

97238857 is an equidigital number, since it uses as much as digits as its factorization.

97238857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 49.

The square root of 97238857 is about 9860.9764729463. The cubic root of 97238857 is about 459.8469197626.

The spelling of 97238857 in words is "ninety-seven million, two hundred thirty-eight thousand, eight hundred fifty-seven".