516561612 has 24 divisors (see below), whose sum is σ = 1377497856. Its totient is φ = 147589008.

The previous prime is 516561599. The next prime is 516561641. The reversal of 516561612 is 216165615.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3074688 + ... + 3074855.

It is an arithmetic number, because the mean of its divisors is an integer number (57395744).

Almost surely, 2^516561612 is an apocalyptic number.

It is an amenable number.

516561612 is an abundant number, since it is smaller than the sum of its proper divisors (860936244).

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

516561612 is a wasteful number, since it uses less digits than its factorization.

516561612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6149557 (or 6149555 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 516561612 is about 22727.9918162604. The cubic root of 516561612 is about 802.3688185338.

The spelling of 516561612 in words is "five hundred sixteen million, five hundred sixty-one thousand, six hundred twelve".