516063781 has 8 divisors (see below), whose sum is σ = 548601984. Its totient is φ = 483768000.

The previous prime is 516063773. The next prime is 516063797. The reversal of 516063781 is 187360615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 516063781 - 2³ = 516063773 is a prime.

It is a super-2 number, since 2×516063781² = 532643652120031922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 516063781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516066781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56205 + ... + 64738.

It is an arithmetic number, because the mean of its divisors is an integer number (68575248).

Almost surely, 2^516063781 is an apocalyptic number.

It is an amenable number.

516063781 is a deficient number, since it is larger than the sum of its proper divisors (32538203).

516063781 is a wasteful number, since it uses less digits than its factorization.

516063781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121211.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 516063781 is about 22717.0372408023. The cubic root of 516063781 is about 802.1109774226.

The spelling of 516063781 in words is "five hundred sixteen million, sixty-three thousand, seven hundred eighty-one".