27776513 has 2 divisors, whose sum is σ = 27776514. Its totient is φ = 27776512.

The previous prime is 27776503. The next prime is 27776587. The reversal of 27776513 is 31567772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25321024 + 2455489 = 5032^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 27776513 - 2¹² = 27772417 is a prime.

It is not a weakly prime, because it can be changed into another prime (27776503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888256 + 13888257.

It is an arithmetic number, because the mean of its divisors is an integer number (13888257).

Almost surely, 2^27776513 is an apocalyptic number.

It is an amenable number.

27776513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27776513 is an equidigital number, since it uses as much as digits as its factorization.

27776513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 38.

The square root of 27776513 is about 5270.3427782261. The cubic root of 27776513 is about 302.8488355614.

The spelling of 27776513 in words is "twenty-seven million, seven hundred seventy-six thousand, five hundred thirteen".