516078540 has 72 divisors (see below), whose sum is σ = 1623432720. Its totient is φ = 137619648.

The previous prime is 516078533. The next prime is 516078547. The reversal of 516078540 is 45870615.

516078540 is a `hidden beast` number, since 5 + 1 + 607 + 8 + 5 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (516078533) and next prime (516078547).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 516078495 and 516078504.

It is not an unprimeable number, because it can be changed into a prime (516078547) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 48235 + ... + 57954.

Almost surely, 2^516078540 is an apocalyptic number.

It is an amenable number.

516078540 is an abundant number, since it is smaller than the sum of its proper divisors (1107354180).

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

516078540 is a wasteful number, since it uses less digits than its factorization.

516078540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106213 (or 106199 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 516078540 is about 22717.3620827771. The cubic root of 516078540 is about 802.1186239213.

The spelling of 516078540 in words is "five hundred sixteen million, seventy-eight thousand, five hundred forty".