27049861 has 2 divisors, whose sum is σ = 27049862. Its totient is φ = 27049860.

The previous prime is 27049853. The next prime is 27049877. The reversal of 27049861 is 16894072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16120225 + 10929636 = 4015^2 + 3306^2 .

It is a cyclic number.

It is not a de Polignac number, because 27049861 - 2³ = 27049853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27049861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27049801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13524930 + 13524931.

It is an arithmetic number, because the mean of its divisors is an integer number (13524931).

Almost surely, 2^27049861 is an apocalyptic number.

It is an amenable number.

27049861 is a deficient number, since it is larger than the sum of its proper divisors (1).

27049861 is an equidigital number, since it uses as much as digits as its factorization.

27049861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 27049861 is about 5200.9480866473. The cubic root of 27049861 is about 300.1845568097.

The spelling of 27049861 in words is "twenty-seven million, forty-nine thousand, eight hundred sixty-one".