77141161 has 2 divisors, whose sum is σ = 77141162. Its totient is φ = 77141160.

The previous prime is 77141117. The next prime is 77141191. The reversal of 77141161 is 16114177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72999936 + 4141225 = 8544^2 + 2035^2 .

It is an emirp because it is prime and its reverse (16114177) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77141161 - 2⁷ = 77141033 is a prime.

It is not a weakly prime, because it can be changed into another prime (77141101) 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, 38570580 + 38570581.

It is an arithmetic number, because the mean of its divisors is an integer number (38570581).

Almost surely, 2^77141161 is an apocalyptic number.

It is an amenable number.

77141161 is a deficient number, since it is larger than the sum of its proper divisors (1).

77141161 is an equidigital number, since it uses as much as digits as its factorization.

77141161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 28.

The square root of 77141161 is about 8783.0040988263. The cubic root of 77141161 is about 425.6919036442.

The spelling of 77141161 in words is "seventy-seven million, one hundred forty-one thousand, one hundred sixty-one".