45197 has 2 divisors, whose sum is σ = 45198.
Its totient is φ = 45196.
The previous prime is 45191. The next prime is 45233. The reversal of 45197 is 79154.
45197 is nontrivially palindromic in base 5.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 44521 + 676 = 211^2 + 26^2
45197 is a truncatable prime.
It is a cyclic number.
It is not a de Polignac number, because 45197 - 24 = 45181 is a prime.
It is a plaindrome in base 9.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 45197.
It is not a weakly prime, because it can be changed into another prime (45191) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22598 + 22599.
It is an arithmetic number, because the mean of its divisors is an integer number (22599).
245197 is an apocalyptic number.
It is an amenable number.
45197 is a deficient number, since it is larger than the sum of its proper divisors (1).
45197 is an equidigital number, since it uses as much as digits as its factorization.
45197 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1260, while the sum is 26.
The square root of 45197 is about 212.5958607311.
The cubic root of 45197 is about 35.6207617816.
It can be divided in two parts, 45 and 197, that added together give a palindrome (242).
The spelling of 45197 in words is "forty-five thousand, one hundred ninety-seven".