45778729 has 2 divisors, whose sum is σ = 45778730. Its totient is φ = 45778728.

The previous prime is 45778699. The next prime is 45778781. The reversal of 45778729 is 92787754.

45778729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45589504 + 189225 = 6752^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 45778729 - 2²⁵ = 12224297 is a prime.

It is not a weakly prime, because it can be changed into another prime (45778529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22889364 + 22889365.

It is an arithmetic number, because the mean of its divisors is an integer number (22889365).

Almost surely, 2^45778729 is an apocalyptic number.

It is an amenable number.

45778729 is a deficient number, since it is larger than the sum of its proper divisors (1).

45778729 is an equidigital number, since it uses as much as digits as its factorization.

45778729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 49.

The square root of 45778729 is about 6765.9980047292. The cubic root of 45778729 is about 357.7293528850.

The spelling of 45778729 in words is "forty-five million, seven hundred seventy-eight thousand, seven hundred twenty-nine".