327561 has 16 divisors (see below), whose sum is σ = 485184. Its totient is φ = 195264.

The previous prime is 327559. The next prime is 327571. The reversal of 327561 is 165723.

It is not a de Polignac number, because 327561 - 2¹ = 327559 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (327511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330 + ... + 1556.

It is an arithmetic number, because the mean of its divisors is an integer number (30324).

2³²⁷⁵⁶¹ is an apocalyptic number.

It is an amenable number.

327561 is a deficient number, since it is larger than the sum of its proper divisors (157623).

327561 is a wasteful number, since it uses less digits than its factorization.

327561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280.

The product of its digits is 1260, while the sum is 24.

The square root of 327561 is about 572.3294505789. The cubic root of 327561 is about 68.9335634414.

It can be divided in two parts, 327 and 561, that added together give a palindrome (888).

The spelling of 327561 in words is "three hundred twenty-seven thousand, five hundred sixty-one".