509941481 has 12 divisors (see below), whose sum is σ = 613654020. Its totient is φ = 422019360.

The previous prime is 509941457. The next prime is 509941577. The reversal of 509941481 is 184149905.

It can be written as a sum of positive squares in 2 ways, for example, as 188815081 + 321126400 = 13741^2 + 17920^2 .

It is a de Polignac number, because none of the positive numbers 2^k-509941481 is a prime.

It is a super-2 number, since 2×509941481² = 520080628088946722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (509941451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178010 + ... + 180851.

It is an arithmetic number, because the mean of its divisors is an integer number (51137835).

Almost surely, 2^509941481 is an apocalyptic number.

It is an amenable number.

509941481 is a deficient number, since it is larger than the sum of its proper divisors (103712539).

509941481 is a wasteful number, since it uses less digits than its factorization.

509941481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358904 (or 358897 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 509941481 is about 22581.8839116669. The cubic root of 509941481 is about 798.9264146000.

The spelling of 509941481 in words is "five hundred nine million, nine hundred forty-one thousand, four hundred eighty-one".