173261 has 8 divisors (see below), whose sum is σ = 199200. Its totient is φ = 149040.

The previous prime is 173249. The next prime is 173263. The reversal of 173261 is 162371.

It is a happy number.

173261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173261 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 (173263) 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, 206 + ... + 623.

It is an arithmetic number, because the mean of its divisors is an integer number (24900).

2¹⁷³²⁶¹ is an apocalyptic number.

173261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

173261 is a deficient number, since it is larger than the sum of its proper divisors (25939).

173261 is a wasteful number, since it uses less digits than its factorization.

173261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859.

The product of its digits is 252, while the sum is 20.

The square root of 173261 is about 416.2463213051. The cubic root of 173261 is about 55.7485537909.

It can be divided in two parts, 173 and 261, that added together give a palindrome (434).

The spelling of 173261 in words is "one hundred seventy-three thousand, two hundred sixty-one".