245197 has 4 divisors (see below), whose sum is σ = 246240. Its totient is φ = 244156.

The previous prime is 245183. The next prime is 245209. The reversal of 245197 is 791542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 245197 - 2¹¹ = 243149 is a prime.

It is a Duffinian number.

245197 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245107) 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, 18 + ... + 700.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2²⁴⁵¹⁹⁷ is an apocalyptic number.

It is an amenable number.

245197 is a deficient number, since it is larger than the sum of its proper divisors (1043).

245197 is an equidigital number, since it uses as much as digits as its factorization.

245197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its digits is 2520, while the sum is 28.

The square root of 245197 is about 495.1737068949. The cubic root of 245197 is about 62.5900142966.

The spelling of 245197 in words is "two hundred forty-five thousand, one hundred ninety-seven".