27530513 has 2 divisors, whose sum is σ = 27530514. Its totient is φ = 27530512.

The previous prime is 27530509. The next prime is 27530527. The reversal of 27530513 is 31503572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15745024 + 11785489 = 3968^2 + 3433^2 .

It is a cyclic number.

It is not a de Polignac number, because 27530513 - 2² = 27530509 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27530533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13765256 + 13765257.

It is an arithmetic number, because the mean of its divisors is an integer number (13765257).

Almost surely, 2^27530513 is an apocalyptic number.

It is an amenable number.

27530513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27530513 is an equidigital number, since it uses as much as digits as its factorization.

27530513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 27530513 is about 5246.9527346832. The cubic root of 27530513 is about 301.9521326704.

The spelling of 27530513 in words is "twenty-seven million, five hundred thirty thousand, five hundred thirteen".