261274 has 12 divisors (see below), whose sum is σ = 424926. Its totient is φ = 120432.

The previous prime is 261271. The next prime is 261281. The reversal of 261274 is 472162.

It can be written as a sum of positive squares in 3 ways, for example, as 65025 + 196249 = 255^2 + 443^2 .

It is not an unprimeable number, because it can be changed into a prime (261271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49 + ... + 724.

2²⁶¹²⁷⁴ is an apocalyptic number.

261274 is a deficient number, since it is larger than the sum of its proper divisors (163652).

261274 is a wasteful number, since it uses less digits than its factorization.

261274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 788 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 261274 is about 511.1496845348. The cubic root of 261274 is about 63.9291207498.

It can be divided in two parts, 261 and 274, that added together give a palindrome (535).

The spelling of 261274 in words is "two hundred sixty-one thousand, two hundred seventy-four".