16261 has 8 divisors (see below), whose sum is σ = 19584. Its totient is φ = 13200.

The previous prime is 16253. The next prime is 16267.

16261 is nontrivially palindromic in base 10.

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 16261 - 2³ = 16253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111 + ... + 211.

It is an arithmetic number, because the mean of its divisors is an integer number (2448).

2¹⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

16261 is a deficient number, since it is larger than the sum of its proper divisors (3323).

16261 is a wasteful number, since it uses less digits than its factorization.

16261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131.

The product of its digits is 72, while the sum is 16.

The square root of 16261 is about 127.5186260905. The cubic root of 16261 is about 25.3346990646.

The spelling of 16261 in words is "sixteen thousand, two hundred sixty-one".