516208427 has 4 divisors (see below), whose sum is σ = 589952496. Its totient is φ = 442464360.

The previous prime is 516208403. The next prime is 516208493. The reversal of 516208427 is 724802615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724802615 = 5 ⋅144960523.

It is a cyclic number.

It is not a de Polignac number, because 516208427 - 2¹⁰ = 516207403 is a prime.

It is a super-2 number, since 2×516208427² = 532942280211628658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (516208027) 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, 36872024 + ... + 36872037.

It is an arithmetic number, because the mean of its divisors is an integer number (147488124).

Almost surely, 2^516208427 is an apocalyptic number.

516208427 is a deficient number, since it is larger than the sum of its proper divisors (73744069).

516208427 is an equidigital number, since it uses as much as digits as its factorization.

516208427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73744068.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 516208427 is about 22720.2206635411. The cubic root of 516208427 is about 802.1859108646.

The spelling of 516208427 in words is "five hundred sixteen million, two hundred eight thousand, four hundred twenty-seven".