27117257 has 2 divisors, whose sum is σ = 27117258. Its totient is φ = 27117256.

The previous prime is 27117241. The next prime is 27117317. The reversal of 27117257 is 75271172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18567481 + 8549776 = 4309^2 + 2924^2 .

It is a cyclic number.

It is not a de Polignac number, because 27117257 - 2⁴ = 27117241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27117217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13558628 + 13558629.

It is an arithmetic number, because the mean of its divisors is an integer number (13558629).

Almost surely, 2^27117257 is an apocalyptic number.

It is an amenable number.

27117257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27117257 is an equidigital number, since it uses as much as digits as its factorization.

27117257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6860, while the sum is 32.

The square root of 27117257 is about 5207.4232591561. The cubic root of 27117257 is about 300.4336580189.

The spelling of 27117257 in words is "twenty-seven million, one hundred seventeen thousand, two hundred fifty-seven".