501055505 has 4 divisors (see below), whose sum is σ = 601266612. Its totient is φ = 400844400.

The previous prime is 501055469. The next prime is 501055507. The reversal of 501055505 is 505550105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76860289 + 424195216 = 8767^2 + 20596^2 .

It is not a de Polignac number, because 501055505 - 2⁸ = 501055249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501055507) 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 in 3 ways as a sum of consecutive naturals, for example, 50105546 + ... + 50105555.

It is an arithmetic number, because the mean of its divisors is an integer number (150316653).

Almost surely, 2^501055505 is an apocalyptic number.

It is an amenable number.

501055505 is a deficient number, since it is larger than the sum of its proper divisors (100211107).

501055505 is a wasteful number, since it uses less digits than its factorization.

501055505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100211106.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 501055505 is about 22384.2691415199. The cubic root of 501055505 is about 794.2586366915.

The spelling of 501055505 in words is "five hundred one million, fifty-five thousand, five hundred five".