274145 has 4 divisors (see below), whose sum is σ = 328980. Its totient is φ = 219312.

The previous prime is 274139. The next prime is 274147. The reversal of 274145 is 541472.

274145 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73441 + 200704 = 271^2 + 448^2 .

It is a cyclic number.

It is not a de Polignac number, because 274145 - 2⁶ = 274081 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 274145.

It is not an unprimeable number, because it can be changed into a prime (274147) 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, 27410 + ... + 27419.

It is an arithmetic number, because the mean of its divisors is an integer number (82245).

2²⁷⁴¹⁴⁵ is an apocalyptic number.

It is an amenable number.

274145 is a deficient number, since it is larger than the sum of its proper divisors (54835).

274145 is an equidigital number, since it uses as much as digits as its factorization.

274145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54834.

The product of its digits is 1120, while the sum is 23.

The square root of 274145 is about 523.5885789434. The cubic root of 274145 is about 64.9621080926.

It can be divided in two parts, 2 and 74145, that added together give a palindrome (74147).

The spelling of 274145 in words is "two hundred seventy-four thousand, one hundred forty-five".