261201 has 8 divisors (see below), whose sum is σ = 352800. Its totient is φ = 171872.

The previous prime is 261169. The next prime is 261223. The reversal of 261201 is 102162.

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 261201 - 2⁵ = 261169 is a prime.

261201 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (261241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276 + ... + 773.

It is an arithmetic number, because the mean of its divisors is an integer number (44100).

2²⁶¹²⁰¹ is an apocalyptic number.

It is an amenable number.

261201 is a deficient number, since it is larger than the sum of its proper divisors (91599).

261201 is a wasteful number, since it uses less digits than its factorization.

261201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 261201 is about 511.0782718919. The cubic root of 261201 is about 63.9231662595.

Adding to 261201 its reverse (102162), we get a palindrome (363363).

The spelling of 261201 in words is "two hundred sixty-one thousand, two hundred one".