516481 has 4 divisors (see below), whose sum is σ = 590272. Its totient is φ = 442692.

The previous prime is 516469. The next prime is 516493. The reversal of 516481 is 184615.

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: 184615 = 5 ⋅36923.

It is an interprime number because it is at equal distance from previous prime (516469) and next prime (516493).

It is a cyclic number.

It is not a de Polignac number, because 516481 - 2⁵ = 516449 is a prime.

It is a super-2 number, since 2×516481² = 533505246722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36885 + ... + 36898.

It is an arithmetic number, because the mean of its divisors is an integer number (147568).

2⁵¹⁶⁴⁸¹ is an apocalyptic number.

It is an amenable number.

516481 is a deficient number, since it is larger than the sum of its proper divisors (73791).

516481 is an equidigital number, since it uses as much as digits as its factorization.

516481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73790.

The product of its digits is 960, while the sum is 25.

The square root of 516481 is about 718.6661255409. Note that the first 3 decimals coincide. The cubic root of 516481 is about 80.2327078485.

The spelling of 516481 in words is "five hundred sixteen thousand, four hundred eighty-one".