27100961 has 2 divisors, whose sum is σ = 27100962. Its totient is φ = 27100960.

The previous prime is 27100937. The next prime is 27100963. The reversal of 27100961 is 16900172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26368225 + 732736 = 5135^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 27100961 - 2¹⁰ = 27099937 is a prime.

Together with 27100963, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27100961.

It is not a weakly prime, because it can be changed into another prime (27100963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13550480 + 13550481.

It is an arithmetic number, because the mean of its divisors is an integer number (13550481).

Almost surely, 2^27100961 is an apocalyptic number.

It is an amenable number.

27100961 is a deficient number, since it is larger than the sum of its proper divisors (1).

27100961 is an equidigital number, since it uses as much as digits as its factorization.

27100961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 27100961 is about 5205.8583346073. The cubic root of 27100961 is about 300.3734645176.

The spelling of 27100961 in words is "twenty-seven million, one hundred thousand, nine hundred sixty-one".