502101009 has 6 divisors (see below), whose sum is σ = 725257026. Its totient is φ = 334734000.

The previous prime is 502101007. The next prime is 502101023. The reversal of 502101009 is 900101205.

It can be written as a sum of positive squares in only one way, i.e., 409941009 + 92160000 = 20247^2 + 9600^2 .

It is not a de Polignac number, because 502101009 - 2¹ = 502101007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 502100982 and 502101000.

It is not an unprimeable number, because it can be changed into a prime (502101007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27894492 + ... + 27894509.

It is an arithmetic number, because the mean of its divisors is an integer number (120876171).

Almost surely, 2^502101009 is an apocalyptic number.

It is an amenable number.

502101009 is a deficient number, since it is larger than the sum of its proper divisors (223156017).

502101009 is a wasteful number, since it uses less digits than its factorization.

502101009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55789007 (or 55789004 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 502101009 is about 22407.6105151799. The cubic root of 502101009 is about 794.8106870930.

The spelling of 502101009 in words is "five hundred two million, one hundred one thousand, nine".