261341 has 4 divisors (see below), whose sum is σ = 276732. Its totient is φ = 245952.

The previous prime is 261337. The next prime is 261347. The reversal of 261341 is 143162.

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 84100 + 177241 = 290^2 + 421^2 .

It is a cyclic number.

It is not a de Polignac number, because 261341 - 2² = 261337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 15373 = 261341 / (2 + 6 + 1 + 3 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261347) 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, 7670 + ... + 7703.

It is an arithmetic number, because the mean of its divisors is an integer number (69183).

2²⁶¹³⁴¹ is an apocalyptic number.

It is an amenable number.

261341 is a deficient number, since it is larger than the sum of its proper divisors (15391).

261341 is a wasteful number, since it uses less digits than its factorization.

261341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15390.

The product of its digits is 144, while the sum is 17.

The square root of 261341 is about 511.2152188658. The cubic root of 261341 is about 63.9345848539.

The spelling of 261341 in words is "two hundred sixty-one thousand, three hundred forty-one".