261092 has 12 divisors (see below), whose sum is σ = 492156. Its totient is φ = 120480.

The previous prime is 261089. The next prime is 261101. The reversal of 261092 is 290162.

It can be written as a sum of positive squares in 2 ways, for example, as 141376 + 119716 = 376^2 + 346^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2459 + ... + 2562.

It is an arithmetic number, because the mean of its divisors is an integer number (41013).

2²⁶¹⁰⁹² is an apocalyptic number.

It is an amenable number.

261092 is a deficient number, since it is larger than the sum of its proper divisors (231064).

261092 is a wasteful number, since it uses less digits than its factorization.

261092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038 (or 5036 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 261092 is about 510.9716234783. The cubic root of 261092 is about 63.9142732428.

The spelling of 261092 in words is "two hundred sixty-one thousand, ninety-two".