27051961 has 2 divisors, whose sum is σ = 27051962. Its totient is φ = 27051960.

The previous prime is 27051949. The next prime is 27051971. The reversal of 27051961 is 16915072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18757561 + 8294400 = 4331^2 + 2880^2 .

It is a cyclic number.

It is not a de Polignac number, because 27051961 - 2⁷ = 27051833 is a prime.

It is not a weakly prime, because it can be changed into another prime (27051901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13525980 + 13525981.

It is an arithmetic number, because the mean of its divisors is an integer number (13525981).

Almost surely, 2^27051961 is an apocalyptic number.

It is an amenable number.

27051961 is a deficient number, since it is larger than the sum of its proper divisors (1).

27051961 is an equidigital number, since it uses as much as digits as its factorization.

27051961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 27051961 is about 5201.1499689972. The cubic root of 27051961 is about 300.1923248257.

The spelling of 27051961 in words is "twenty-seven million, fifty-one thousand, nine hundred sixty-one".