171154 has 4 divisors (see below), whose sum is σ = 256734. Its totient is φ = 85576.

The previous prime is 171131. The next prime is 171161. The reversal of 171154 is 451171.

171154 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451171 = 7 ⋅64453.

It can be written as a sum of positive squares in only one way, i.e., 156025 + 15129 = 395^2 + 123^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42787 + ... + 42790.

2¹⁷¹¹⁵⁴ is an apocalyptic number.

171154 is a deficient number, since it is larger than the sum of its proper divisors (85580).

171154 is an equidigital number, since it uses as much as digits as its factorization.

171154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85579.

The product of its digits is 140, while the sum is 19.

The square root of 171154 is about 413.7076262290. The cubic root of 171154 is about 55.5216483467.

It can be divided in two parts, 171 and 154, that added together give a triangular number (325 = T₂₅).

The spelling of 171154 in words is "one hundred seventy-one thousand, one hundred fifty-four".