261203 has 4 divisors (see below), whose sum is σ = 270240. Its totient is φ = 252168.

The previous prime is 261169. The next prime is 261223. The reversal of 261203 is 302162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 261203 - 2¹⁰ = 260179 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 3 ways as a sum of consecutive naturals, for example, 4475 + ... + 4532.

It is an arithmetic number, because the mean of its divisors is an integer number (67560).

2²⁶¹²⁰³ is an apocalyptic number.

261203 is a deficient number, since it is larger than the sum of its proper divisors (9037).

261203 is an equidigital number, since it uses as much as digits as its factorization.

261203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9036.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 261203 is about 511.0802285356. The cubic root of 261203 is about 63.9233294110.

Adding to 261203 its reverse (302162), we get a palindrome (563365).

It can be divided in two parts, 261 and 203, that added together give a palindrome (464).

The spelling of 261203 in words is "two hundred sixty-one thousand, two hundred three".