27102961 has 2 divisors, whose sum is σ = 27102962. Its totient is φ = 27102960.

The previous prime is 27102917. The next prime is 27102979. The reversal of 27102961 is 16920172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26718561 + 384400 = 5169^2 + 620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27102961 is a prime.

It is not a weakly prime, because it can be changed into another prime (27102161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13551480 + 13551481.

It is an arithmetic number, because the mean of its divisors is an integer number (13551481).

Almost surely, 2^27102961 is an apocalyptic number.

It is an amenable number.

27102961 is a deficient number, since it is larger than the sum of its proper divisors (1).

27102961 is an equidigital number, since it uses as much as digits as its factorization.

27102961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 27102961 is about 5206.0504223451. The cubic root of 27102961 is about 300.3808533349.

It can be divided in two parts, 2710 and 2961, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 27102961 in words is "twenty-seven million, one hundred two thousand, nine hundred sixty-one".