516740047 has 4 divisors (see below), whose sum is σ = 517477896. Its totient is φ = 516002200.

The previous prime is 516739999. The next prime is 516740069. The reversal of 516740047 is 740047615.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516740047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 516739994 and 516740021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516740087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367873 + ... + 369274.

It is an arithmetic number, because the mean of its divisors is an integer number (129369474).

Almost surely, 2^516740047 is an apocalyptic number.

516740047 is a deficient number, since it is larger than the sum of its proper divisors (737849).

516740047 is an equidigital number, since it uses as much as digits as its factorization.

516740047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737848.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 516740047 is about 22731.9169231282. The cubic root of 516740047 is about 802.4611948641.

The spelling of 516740047 in words is "five hundred sixteen million, seven hundred forty thousand, forty-seven".