77275027 has 2 divisors, whose sum is σ = 77275028. Its totient is φ = 77275026.

The previous prime is 77275021. The next prime is 77275031. The reversal of 77275027 is 72057277.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77275027 is a prime.

It is not a weakly prime, because it can be changed into another prime (77275021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38637513 + 38637514.

It is an arithmetic number, because the mean of its divisors is an integer number (38637514).

Almost surely, 2^77275027 is an apocalyptic number.

77275027 is a deficient number, since it is larger than the sum of its proper divisors (1).

77275027 is an equidigital number, since it uses as much as digits as its factorization.

77275027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48020, while the sum is 37.

The square root of 77275027 is about 8790.6215366150. The cubic root of 77275027 is about 425.9380011458.

The spelling of 77275027 in words is "seventy-seven million, two hundred seventy-five thousand, twenty-seven".