197156 has 12 divisors (see below), whose sum is σ = 360192. Its totient is φ = 94248.

The previous prime is 197147. The next prime is 197159. The reversal of 197156 is 651791.

197156 = T₂₁₈ + T₂₁₉ + ... + T₂₂₅.

It is a happy number.

197156 is nontrivially palindromic in base 7.

It is not an unprimeable number, because it can be changed into a prime (197159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (30016).

2¹⁹⁷¹⁵⁶ is an apocalyptic number.

It is an amenable number.

197156 is a deficient number, since it is larger than the sum of its proper divisors (163036).

197156 is a wasteful number, since it uses less digits than its factorization.

197156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2168 counting only the distinct ones).

The product of its digits is 1890, while the sum is 29.

The square root of 197156 is about 444.0225219513. The cubic root of 197156 is about 58.2018334901.

It can be divided in two parts, 197 and 156, that added together give a palindrome (353).

The spelling of 197156 in words is "one hundred ninety-seven thousand, one hundred fifty-six".