261233 has 8 divisors (see below), whose sum is σ = 303552. Its totient is φ = 220176.

The previous prime is 261229. The next prime is 261241. The reversal of 261233 is 332162.

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 261233 - 2² = 261229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261223) 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, 191 + ... + 747.

It is an arithmetic number, because the mean of its divisors is an integer number (37944).

2²⁶¹²³³ is an apocalyptic number.

It is an amenable number.

261233 is a deficient number, since it is larger than the sum of its proper divisors (42319).

261233 is an equidigital number, since it uses as much as digits as its factorization.

261233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631.

The product of its digits is 216, while the sum is 17.

The square root of 261233 is about 511.1095772924. The cubic root of 261233 is about 63.9257765836.

Adding to 261233 its reverse (332162), we get a palindrome (593395).

It can be divided in two parts, 261 and 233, that added together give a palindrome (494).

The spelling of 261233 in words is "two hundred sixty-one thousand, two hundred thirty-three".