261104 has 10 divisors (see below), whose sum is σ = 505920. Its totient is φ = 130544.

The previous prime is 261101. The next prime is 261127. The reversal of 261104 is 401162.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 261104.

It is not an unprimeable number, because it can be changed into a prime (261101) 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 as a sum of consecutive naturals, namely, 8144 + ... + 8175.

It is an arithmetic number, because the mean of its divisors is an integer number (50592).

2²⁶¹¹⁰⁴ is an apocalyptic number.

It is an amenable number.

261104 is a deficient number, since it is larger than the sum of its proper divisors (244816).

261104 is a wasteful number, since it uses less digits than its factorization.

261104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16327 (or 16321 counting only the distinct ones).

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

The square root of 261104 is about 510.9833656784. The cubic root of 261104 is about 63.9152524117.

Adding to 261104 its reverse (401162), we get a palindrome (662266).

The spelling of 261104 in words is "two hundred sixty-one thousand, one hundred four".