77271097 has 2 divisors, whose sum is σ = 77271098. Its totient is φ = 77271096.

The previous prime is 77271071. The next prime is 77271113. The reversal of 77271097 is 79017277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65028096 + 12243001 = 8064^2 + 3499^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77271097 is a prime.

It is a pancake number, because a pancake can be divided into 77271097 parts by 12431 straight cuts.

It is not a weakly prime, because it can be changed into another prime (77271017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38635548 + 38635549.

It is an arithmetic number, because the mean of its divisors is an integer number (38635549).

Almost surely, 2^77271097 is an apocalyptic number.

It is an amenable number.

77271097 is a deficient number, since it is larger than the sum of its proper divisors (1).

77271097 is an equidigital number, since it uses as much as digits as its factorization.

77271097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43218, while the sum is 40.

The square root of 77271097 is about 8790.3980000908. The cubic root of 77271097 is about 425.9307803364.

The spelling of 77271097 in words is "seventy-seven million, two hundred seventy-one thousand, ninety-seven".