501728055 has 32 divisors (see below), whose sum is σ = 868091904. Its totient is φ = 246483456.

The previous prime is 501728039. The next prime is 501728057. The reversal of 501728055 is 550827105.

It is a happy number.

It is not a de Polignac number, because 501728055 - 2⁴ = 501728039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501728057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8947 + ... + 32916.

It is an arithmetic number, because the mean of its divisors is an integer number (27127872).

Almost surely, 2^501728055 is an apocalyptic number.

501728055 is a deficient number, since it is larger than the sum of its proper divisors (366363849).

501728055 is a wasteful number, since it uses less digits than its factorization.

501728055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41935.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 501728055 is about 22399.2869306146. The cubic root of 501728055 is about 794.6138467201.

The spelling of 501728055 in words is "five hundred one million, seven hundred twenty-eight thousand, fifty-five".