27530561 has 8 divisors (see below), whose sum is σ = 28015104. Its totient is φ = 27050400.

The previous prime is 27530551. The next prime is 27530603. The reversal of 27530561 is 16503572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27530561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27530551) 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, 13136 + ... + 15086.

It is an arithmetic number, because the mean of its divisors is an integer number (3501888).

Almost surely, 2^27530561 is an apocalyptic number.

It is an amenable number.

27530561 is a deficient number, since it is larger than the sum of its proper divisors (484543).

27530561 is a wasteful number, since it uses less digits than its factorization.

27530561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 27530561 is about 5246.9573087648. The cubic root of 27530561 is about 301.9523081568.

The spelling of 27530561 in words is "twenty-seven million, five hundred thirty thousand, five hundred sixty-one".