516531 has 8 divisors (see below), whose sum is σ = 693504. Its totient is φ = 341960.

The previous prime is 516521. The next prime is 516539. The reversal of 516531 is 135615.

It is a happy number.

516531 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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 516531 - 2⁵ = 516499 is a prime.

It is a super-2 number, since 2×516531² = 533608547922, which contains 22 as substring.

516531 is strictly pandigital in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 516498 and 516507.

It is not an unprimeable number, because it can be changed into a prime (516539) 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, 15 + ... + 1016.

It is an arithmetic number, because the mean of its divisors is an integer number (86688).

2⁵¹⁶⁵³¹ is an apocalyptic number.

516531 is a deficient number, since it is larger than the sum of its proper divisors (176973).

516531 is a wasteful number, since it uses less digits than its factorization.

516531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201.

The product of its digits is 450, while the sum is 21.

The square root of 516531 is about 718.7009113672. The cubic root of 516531 is about 80.2352968473.

The spelling of 516531 in words is "five hundred sixteen thousand, five hundred thirty-one".