97211 has 4 divisors (see below), whose sum is σ = 99624. Its totient is φ = 94800.

The previous prime is 97187. The next prime is 97213. The reversal of 97211 is 11279.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97211 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 97211.

It is not an unprimeable number, because it can be changed into a prime (97213) 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, 1145 + ... + 1226.

It is an arithmetic number, because the mean of its divisors is an integer number (24906).

2⁹⁷²¹¹ is an apocalyptic number.

97211 is a deficient number, since it is larger than the sum of its proper divisors (2413).

97211 is a wasteful number, since it uses less digits than its factorization.

97211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412.

The product of its digits is 126, while the sum is 20.

The square root of 97211 is about 311.7867861215. The cubic root of 97211 is about 45.9803003234.

The spelling of 97211 in words is "ninety-seven thousand, two hundred eleven".