97082857 has 4 divisors (see below), whose sum is σ = 99706756. Its totient is φ = 94458960.

The previous prime is 97082851. The next prime is 97082861. The reversal of 97082857 is 75828079.

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 56836521 + 40246336 = 7539^2 + 6344^2 .

It is a cyclic number.

It is not a de Polignac number, because 97082857 - 2¹⁹ = 96558569 is a prime.

It is a super-2 number, since 2×97082857² = 18850162246564898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97082851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311894 + ... + 1311967.

It is an arithmetic number, because the mean of its divisors is an integer number (24926689).

Almost surely, 2^97082857 is an apocalyptic number.

It is an amenable number.

97082857 is a deficient number, since it is larger than the sum of its proper divisors (2623899).

97082857 is a wasteful number, since it uses less digits than its factorization.

97082857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623898.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 97082857 is about 9853.0633307617. The cubic root of 97082857 is about 459.6008778066.

The spelling of 97082857 in words is "ninety-seven million, eighty-two thousand, eight hundred fifty-seven".