27531013 has 2 divisors, whose sum is σ = 27531014. Its totient is φ = 27531012.

The previous prime is 27530999. The next prime is 27531059. The reversal of 27531013 is 31013572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27531009 + 4 = 5247^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 27531013 - 2¹³ = 27522821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27531083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13765506 + 13765507.

It is an arithmetic number, because the mean of its divisors is an integer number (13765507).

Almost surely, 2^27531013 is an apocalyptic number.

It is an amenable number.

27531013 is a deficient number, since it is larger than the sum of its proper divisors (1).

27531013 is an equidigital number, since it uses as much as digits as its factorization.

27531013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 27531013 is about 5247.0003811702. Note that the first 3 decimals coincide. The cubic root of 27531013 is about 301.9539606440.

Adding to 27531013 its reverse (31013572), we get a palindrome (58544585).

The spelling of 27531013 in words is "twenty-seven million, five hundred thirty-one thousand, thirteen".