772514161 has 2 divisors, whose sum is σ = 772514162. Its totient is φ = 772514160.

The previous prime is 772514159. The next prime is 772514269. The reversal of 772514161 is 161415277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 575280225 + 197233936 = 23985^2 + 14044^2 .

It is an emirp because it is prime and its reverse (161415277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 772514161 - 2¹ = 772514159 is a prime.

Together with 772514159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (772514461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386257080 + 386257081.

It is an arithmetic number, because the mean of its divisors is an integer number (386257081).

Almost surely, 2^772514161 is an apocalyptic number.

It is an amenable number.

772514161 is a deficient number, since it is larger than the sum of its proper divisors (1).

772514161 is an equidigital number, since it uses as much as digits as its factorization.

772514161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 34.

The square root of 772514161 is about 27794.1389684948. The cubic root of 772514161 is about 917.5621346453.

The spelling of 772514161 in words is "seven hundred seventy-two million, five hundred fourteen thousand, one hundred sixty-one".