516837481 has 2 divisors, whose sum is σ = 516837482. Its totient is φ = 516837480.

The previous prime is 516837473. The next prime is 516837509. The reversal of 516837481 is 184738615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372837481 + 144000000 = 19309^2 + 12000^2 .

It is a cyclic number.

It is not a de Polignac number, because 516837481 - 2³ = 516837473 is a prime.

It is a super-2 number, since 2×516837481² = 534241963532850722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (516837421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258418740 + 258418741.

It is an arithmetic number, because the mean of its divisors is an integer number (258418741).

Almost surely, 2^516837481 is an apocalyptic number.

It is an amenable number.

516837481 is a deficient number, since it is larger than the sum of its proper divisors (1).

516837481 is an equidigital number, since it uses as much as digits as its factorization.

516837481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 516837481 is about 22734.0599321811. The cubic root of 516837481 is about 802.5116277596.

The spelling of 516837481 in words is "five hundred sixteen million, eight hundred thirty-seven thousand, four hundred eighty-one".