261041 has 8 divisors (see below), whose sum is σ = 300000. Its totient is φ = 224640.

The previous prime is 261031. The next prime is 261043. The reversal of 261041 is 140162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261041 - 2¹⁰ = 260017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (261043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 416 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (37500).

2²⁶¹⁰⁴¹ is an apocalyptic number.

It is an amenable number.

261041 is a deficient number, since it is larger than the sum of its proper divisors (38959).

261041 is a wasteful number, since it uses less digits than its factorization.

261041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 261041 is about 510.9217161171. The cubic root of 261041 is about 63.9101114400.

The spelling of 261041 in words is "two hundred sixty-one thousand, forty-one".