516427 has 4 divisors (see below), whose sum is σ = 525240. Its totient is φ = 507616.

The previous prime is 516421. The next prime is 516431. The reversal of 516427 is 724615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 516427 - 2¹¹ = 514379 is a prime.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4318 + ... + 4435.

It is an arithmetic number, because the mean of its divisors is an integer number (131310).

2⁵¹⁶⁴²⁷ is an apocalyptic number.

516427 is a deficient number, since it is larger than the sum of its proper divisors (8813).

516427 is an equidigital number, since it uses as much as digits as its factorization.

516427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8812.

The product of its digits is 1680, while the sum is 25.

The square root of 516427 is about 718.6285549573. The cubic root of 516427 is about 80.2299115422.

The spelling of 516427 in words is "five hundred sixteen thousand, four hundred twenty-seven".