97113857 has 4 divisors (see below), whose sum is σ = 97251540. Its totient is φ = 96976176.

The previous prime is 97113853. The next prime is 97113931. The reversal of 97113857 is 75831179.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46362481 + 50751376 = 6809^2 + 7124^2 .

It is a cyclic number.

It is not a de Polignac number, because 97113857 - 2² = 97113853 is a prime.

It is a super-2 number, since 2×97113857² = 18862202442832898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97113851) 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 in 3 ways as a sum of consecutive naturals, for example, 67778 + ... + 69195.

It is an arithmetic number, because the mean of its divisors is an integer number (24312885).

Almost surely, 2^97113857 is an apocalyptic number.

It is an amenable number.

97113857 is a deficient number, since it is larger than the sum of its proper divisors (137683).

97113857 is a wasteful number, since it uses less digits than its factorization.

97113857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137682.

The product of its digits is 52920, while the sum is 41.

The square root of 97113857 is about 9854.6363200272. The cubic root of 97113857 is about 459.6497917324.

The spelling of 97113857 in words is "ninety-seven million, one hundred thirteen thousand, eight hundred fifty-seven".