27105257 has 2 divisors, whose sum is σ = 27105258. Its totient is φ = 27105256.

The previous prime is 27105251. The next prime is 27105263. The reversal of 27105257 is 75250172.

It is a balanced prime because it is at equal distance from previous prime (27105251) and next prime (27105263).

It can be written as a sum of positive squares in only one way, i.e., 24245776 + 2859481 = 4924^2 + 1691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27105257 is a prime.

It is not a weakly prime, because it can be changed into another prime (27105251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13552628 + 13552629.

It is an arithmetic number, because the mean of its divisors is an integer number (13552629).

Almost surely, 2^27105257 is an apocalyptic number.

It is an amenable number.

27105257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27105257 is an equidigital number, since it uses as much as digits as its factorization.

27105257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 27105257 is about 5206.2709303301. The cubic root of 27105257 is about 300.3893352490.

The spelling of 27105257 in words is "twenty-seven million, one hundred five thousand, two hundred fifty-seven".