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972197 is a prime number
BaseRepresentation
bin11101101010110100101
31211101121022
43231112211
5222102242
632500525
711156252
oct3552645
91741538
10972197
11604476
123aa745
13280685
141b4429
151430d2
hexed5a5

972197 has 2 divisors, whose sum is σ = 972198. Its totient is φ = 972196.

The previous prime is 972163. The next prime is 972199. The reversal of 972197 is 791279.

It is a Cunningham number, because it is equal to 9862+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972196 + 1 = 986^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 972197 - 26 = 972133 is a prime.

Together with 972199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486098 + 486099.

It is an arithmetic number, because the mean of its divisors is an integer number (486099).

972197 is a Friedman number, since it can be written as (977+9)^2+1, using all its digits and the basic arithmetic operations.

2972197 is an apocalyptic number.

It is an amenable number.

972197 is a deficient number, since it is larger than the sum of its proper divisors (1).

972197 is an equidigital number, since it uses as much as digits as its factorization.

972197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 35.

The square root of 972197 is about 986.0005070993. Note that the first 3 decimals coincide. The cubic root of 972197 is about 99.0645091924.

The spelling of 972197 in words is "nine hundred seventy-two thousand, one hundred ninety-seven".