773251961 has 2 divisors, whose sum is σ = 773251962. Its totient is φ = 773251960.

The previous prime is 773251957. The next prime is 773251967. The reversal of 773251961 is 169152377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769008361 + 4243600 = 27731^2 + 2060^2 .

It is an emirp because it is prime and its reverse (169152377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 773251961 - 2² = 773251957 is a prime.

It is not a weakly prime, because it can be changed into another prime (773251967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386625980 + 386625981.

It is an arithmetic number, because the mean of its divisors is an integer number (386625981).

Almost surely, 2^773251961 is an apocalyptic number.

It is an amenable number.

773251961 is a deficient number, since it is larger than the sum of its proper divisors (1).

773251961 is an equidigital number, since it uses as much as digits as its factorization.

773251961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 41.

The square root of 773251961 is about 27807.4083833787. The cubic root of 773251961 is about 917.8541517036.

The spelling of 773251961 in words is "seven hundred seventy-three million, two hundred fifty-one thousand, nine hundred sixty-one".