197251 has 8 divisors (see below), whose sum is σ = 214704. Its totient is φ = 180480.

The previous prime is 197243. The next prime is 197257. The reversal of 197251 is 152791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197251 - 2³ = 197243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556 + ... + 838.

It is an arithmetic number, because the mean of its divisors is an integer number (26838).

2¹⁹⁷²⁵¹ is an apocalyptic number.

197251 is a deficient number, since it is larger than the sum of its proper divisors (17453).

197251 is a wasteful number, since it uses less digits than its factorization.

197251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its digits is 630, while the sum is 25.

The square root of 197251 is about 444.1294856233. The cubic root of 197251 is about 58.2111802110.

The spelling of 197251 in words is "one hundred ninety-seven thousand, two hundred fifty-one".