197401 has 4 divisors (see below), whose sum is σ = 198352. Its totient is φ = 196452.

The previous prime is 197389. The next prime is 197419. The reversal of 197401 is 104791.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104791 = 43 ⋅2437.

It is a cyclic number.

It is not a de Polignac number, because 197401 - 2⁵ = 197369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197441) 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 in 3 ways as a sum of consecutive naturals, for example, 15 + ... + 628.

It is an arithmetic number, because the mean of its divisors is an integer number (49588).

2¹⁹⁷⁴⁰¹ is an apocalyptic number.

It is an amenable number.

197401 is a deficient number, since it is larger than the sum of its proper divisors (951).

197401 is an equidigital number, since it uses as much as digits as its factorization.

197401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 197401 is about 444.2983232019. The cubic root of 197401 is about 58.2259320832.

The spelling of 197401 in words is "one hundred ninety-seven thousand, four hundred one".