515461980 has 48 divisors (see below), whose sum is σ = 1574504064. Its totient is φ = 124960320.

The previous prime is 515461957. The next prime is 515462023. The reversal of 515461980 is 89164515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389842 + ... + 391161.

It is an arithmetic number, because the mean of its divisors is an integer number (32802168).

Almost surely, 2^515461980 is an apocalyptic number.

It is an amenable number.

515461980 is an abundant number, since it is smaller than the sum of its proper divisors (1059042084).

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

515461980 is a wasteful number, since it uses less digits than its factorization.

515461980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781026 (or 781024 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 515461980 is about 22703.7877897059. The cubic root of 515461980 is about 801.7990657536.

The spelling of 515461980 in words is "five hundred fifteen million, four hundred sixty-one thousand, nine hundred eighty".