326261 has 4 divisors (see below), whose sum is σ = 351372. Its totient is φ = 301152.

The previous prime is 326257. The next prime is 326309. The reversal of 326261 is 162623.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70225 + 256036 = 265^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 326261 - 2² = 326257 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 (326251) 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, 12536 + ... + 12561.

It is an arithmetic number, because the mean of its divisors is an integer number (87843).

2³²⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

326261 is a deficient number, since it is larger than the sum of its proper divisors (25111).

326261 is a wasteful number, since it uses less digits than its factorization.

326261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25110.

The product of its digits is 432, while the sum is 20.

The square root of 326261 is about 571.1926119970. The cubic root of 326261 is about 68.8422497164.

Adding to 326261 its reverse (162623), we get a palindrome (488884).

The spelling of 326261 in words is "three hundred twenty-six thousand, two hundred sixty-one".