274161 has 4 divisors (see below), whose sum is σ = 365552. Its totient is φ = 182772.

The previous prime is 274147. The next prime is 274163. The reversal of 274161 is 161472.

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.

It is not a de Polignac number, because 274161 - 2⁷ = 274033 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

274161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (274163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45691 + ... + 45696.

It is an arithmetic number, because the mean of its divisors is an integer number (91388).

2²⁷⁴¹⁶¹ is an apocalyptic number.

It is an amenable number.

274161 is a deficient number, since it is larger than the sum of its proper divisors (91391).

274161 is an equidigital number, since it uses as much as digits as its factorization.

274161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91390.

The product of its digits is 336, while the sum is 21.

The square root of 274161 is about 523.6038578926. The cubic root of 274161 is about 64.9633718685.

It can be divided in two parts, 274 and 161, that added together give a triangular number (435 = T₂₉).

The spelling of 274161 in words is "two hundred seventy-four thousand, one hundred sixty-one".