50320729 has 2 divisors, whose sum is σ = 50320730. Its totient is φ = 50320728.

The previous prime is 50320723. The next prime is 50320763. The reversal of 50320729 is 92702305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47293129 + 3027600 = 6877^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 50320729 - 2⁷ = 50320601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50320697 and 50320706.

It is not a weakly prime, because it can be changed into another prime (50320723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25160364 + 25160365.

It is an arithmetic number, because the mean of its divisors is an integer number (25160365).

Almost surely, 2^50320729 is an apocalyptic number.

It is an amenable number.

50320729 is a deficient number, since it is larger than the sum of its proper divisors (1).

50320729 is an equidigital number, since it uses as much as digits as its factorization.

50320729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 50320729 is about 7093.7105241192. The cubic root of 50320729 is about 369.1891887082.

The spelling of 50320729 in words is "fifty million, three hundred twenty thousand, seven hundred twenty-nine".