516097981 has 16 divisors (see below), whose sum is σ = 597155328. Its totient is φ = 436896000.

The previous prime is 516097979. The next prime is 516097993. The reversal of 516097981 is 189790615.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 516097981 - 2¹ = 516097979 is a prime.

It is a super-2 number, since 2×516097981² = 532714251984552722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516097921) 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 15 ways as a sum of consecutive naturals, for example, 418636 + ... + 419866.

It is an arithmetic number, because the mean of its divisors is an integer number (37322208).

Almost surely, 2^516097981 is an apocalyptic number.

It is an amenable number.

516097981 is a deficient number, since it is larger than the sum of its proper divisors (81057347).

516097981 is a wasteful number, since it uses less digits than its factorization.

516097981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 516097981 is about 22717.7899673362. The cubic root of 516097981 is about 802.1286958975.

The spelling of 516097981 in words is "five hundred sixteen million, ninety-seven thousand, nine hundred eighty-one".