501080909 has 6 divisors (see below), whose sum is σ = 582890094. Its totient is φ = 429497880.

The previous prime is 501080903. The next prime is 501080911. The reversal of 501080909 is 909080105.

It can be written as a sum of positive squares in only one way, i.e., 492396100 + 8684809 = 22190^2 + 2947^2 .

It is not a de Polignac number, because 501080909 - 2⁸ = 501080653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501080903) 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 5 ways as a sum of consecutive naturals, for example, 5113022 + ... + 5113119.

It is an arithmetic number, because the mean of its divisors is an integer number (97148349).

Almost surely, 2^501080909 is an apocalyptic number.

It is an amenable number.

501080909 is a deficient number, since it is larger than the sum of its proper divisors (81809185).

501080909 is a wasteful number, since it uses less digits than its factorization.

501080909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226155 (or 10226148 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 501080909 is about 22384.8365864038. The cubic root of 501080909 is about 794.2720596923.

The spelling of 501080909 in words is "five hundred one million, eighty thousand, nine hundred nine".