27015013 has 2 divisors, whose sum is σ = 27015014. Its totient is φ = 27015012.

The previous prime is 27015011. The next prime is 27015019. The reversal of 27015013 is 31051072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18818244 + 8196769 = 4338^2 + 2863^2 .

It is a cyclic number.

It is not a de Polignac number, because 27015013 - 2¹ = 27015011 is a prime.

Together with 27015011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27015011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13507506 + 13507507.

It is an arithmetic number, because the mean of its divisors is an integer number (13507507).

Almost surely, 2^27015013 is an apocalyptic number.

It is an amenable number.

27015013 is a deficient number, since it is larger than the sum of its proper divisors (1).

27015013 is an equidigital number, since it uses as much as digits as its factorization.

27015013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 27015013 is about 5197.5968485445. The cubic root of 27015013 is about 300.0555934010.

Adding to 27015013 its reverse (31051072), we get a palindrome (58066085).

The spelling of 27015013 in words is "twenty-seven million, fifteen thousand, thirteen".