197154 has 20 divisors (see below), whose sum is σ = 442134. Its totient is φ = 65664.

The previous prime is 197147. The next prime is 197159. The reversal of 197154 is 451791.

It can be written as a sum of positive squares in only one way, i.e., 178929 + 18225 = 423^2 + 135^2 .

It is a super-3 number, since 3×197154³ = 22989950333424792, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 447 + ... + 770.

2¹⁹⁷¹⁵⁴ is an apocalyptic number.

197154 is an abundant number, since it is smaller than the sum of its proper divisors (244980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197154 is a wasteful number, since it uses less digits than its factorization.

197154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1222 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 197154 is about 444.0202698076. The cubic root of 197154 is about 58.2016366848.

It can be divided in two parts, 1971 and 54, that added together give a square (2025 = 45²).

The spelling of 197154 in words is "one hundred ninety-seven thousand, one hundred fifty-four".