516531641 has 4 divisors (see below), whose sum is σ = 533193984. Its totient is φ = 499869300.

The previous prime is 516531629. The next prime is 516531643. The reversal of 516531641 is 146135615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 146135615 = 5 ⋅29227123.

It is a cyclic number.

It is not a de Polignac number, because 516531641 - 2¹⁴ = 516515257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 516531598 and 516531607.

It is not an unprimeable number, because it can be changed into a prime (516531643) 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 3 ways as a sum of consecutive naturals, for example, 8331125 + ... + 8331186.

It is an arithmetic number, because the mean of its divisors is an integer number (133298496).

Almost surely, 2^516531641 is an apocalyptic number.

It is an amenable number.

516531641 is a deficient number, since it is larger than the sum of its proper divisors (16662343).

516531641 is a wasteful number, since it uses less digits than its factorization.

516531641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16662342.

The product of its digits is 10800, while the sum is 32.

The square root of 516531641 is about 22727.3324655579. The cubic root of 516531641 is about 802.3533003714.

The spelling of 516531641 in words is "five hundred sixteen million, five hundred thirty-one thousand, six hundred forty-one".