509791048 has 32 divisors (see below), whose sum is σ = 1054501560. Its totient is φ = 229547520.

The previous prime is 509791031. The next prime is 509791049. The reversal of 509791048 is 840197905.

It can be written as a sum of positive squares in 4 ways, for example, as 166874724 + 342916324 = 12918^2 + 18518^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 509790995 and 509791013.

It is not an unprimeable number, because it can be changed into a prime (509791049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55515 + ... + 64042.

Almost surely, 2^509791048 is an apocalyptic number.

It is an amenable number.

509791048 is an abundant number, since it is smaller than the sum of its proper divisors (544710512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

509791048 is a wasteful number, since it uses less digits than its factorization.

509791048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119617 (or 119613 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 509791048 is about 22578.5528322787. The cubic root of 509791048 is about 798.8478456387.

The spelling of 509791048 in words is "five hundred nine million, seven hundred ninety-one thousand, forty-eight".