97210205 has 4 divisors (see below), whose sum is σ = 116652252. Its totient is φ = 77768160.

The previous prime is 97210193. The next prime is 97210207. The reversal of 97210205 is 50201279.

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 66618244 + 30591961 = 8162^2 + 5531^2 .

It is not a de Polignac number, because 97210205 - 2⁴ = 97210189 is a prime.

It is a super-2 number, since 2×97210205² = 18899647912284050, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97210207) 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 in 3 ways as a sum of consecutive naturals, for example, 9721016 + ... + 9721025.

It is an arithmetic number, because the mean of its divisors is an integer number (29163063).

Almost surely, 2^97210205 is an apocalyptic number.

It is an amenable number.

97210205 is a deficient number, since it is larger than the sum of its proper divisors (19442047).

97210205 is a wasteful number, since it uses less digits than its factorization.

97210205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19442046.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 97210205 is about 9859.5235686112. The cubic root of 97210205 is about 459.8017497943.

The spelling of 97210205 in words is "ninety-seven million, two hundred ten thousand, two hundred five".