729320051 has 2 divisors, whose sum is σ = 729320052. Its totient is φ = 729320050.

The previous prime is 729320029. The next prime is 729320083. The reversal of 729320051 is 150023927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 729320051 - 2¹⁰ = 729319027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 729319996 and 729320023.

It is not a weakly prime, because it can be changed into another prime (729320951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364660025 + 364660026.

It is an arithmetic number, because the mean of its divisors is an integer number (364660026).

Almost surely, 2^729320051 is an apocalyptic number.

729320051 is a deficient number, since it is larger than the sum of its proper divisors (1).

729320051 is an equidigital number, since it uses as much as digits as its factorization.

729320051 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 29.

The square root of 729320051 is about 27005.9262199985. The cubic root of 729320051 is about 900.1316889606.

Adding to 729320051 its reverse (150023927), we get a palindrome (879343978).

The spelling of 729320051 in words is "seven hundred twenty-nine million, three hundred twenty thousand, fifty-one".