27051613 has 2 divisors, whose sum is σ = 27051614. Its totient is φ = 27051612.

The previous prime is 27051593. The next prime is 27051617. The reversal of 27051613 is 31615072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24235929 + 2815684 = 4923^2 + 1678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27051613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27051617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13525806 + 13525807.

It is an arithmetic number, because the mean of its divisors is an integer number (13525807).

Almost surely, 2^27051613 is an apocalyptic number.

It is an amenable number.

27051613 is a deficient number, since it is larger than the sum of its proper divisors (1).

27051613 is an equidigital number, since it uses as much as digits as its factorization.

27051613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 27051613 is about 5201.1165147495. The cubic root of 27051613 is about 300.1910375822.

Adding to 27051613 its reverse (31615072), we get a palindrome (58666685).

The spelling of 27051613 in words is "twenty-seven million, fifty-one thousand, six hundred thirteen".