327553561 has 4 divisors (see below), whose sum is σ = 328600372. Its totient is φ = 326506752.

The previous prime is 327553547. The next prime is 327553573. The reversal of 327553561 is 165355723.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165355723 = 13 ⋅12719671.

It can be written as a sum of positive squares in 2 ways, for example, as 45481536 + 282072025 = 6744^2 + 16795^2 .

It is a cyclic number.

It is not a de Polignac number, because 327553561 - 2¹¹ = 327551513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 327553561.

It is not an unprimeable number, because it can be changed into a prime (327553861) 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 3 ways as a sum of consecutive naturals, for example, 522936 + ... + 523561.

It is an arithmetic number, because the mean of its divisors is an integer number (82150093).

Almost surely, 2^327553561 is an apocalyptic number.

It is an amenable number.

327553561 is a deficient number, since it is larger than the sum of its proper divisors (1046811).

327553561 is a wasteful number, since it uses less digits than its factorization.

327553561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046810.

The product of its digits is 94500, while the sum is 37.

The square root of 327553561 is about 18098.4408444485. The cubic root of 327553561 is about 689.3304160406.

The spelling of 327553561 in words is "three hundred twenty-seven million, five hundred fifty-three thousand, five hundred sixty-one".