516551379 has 4 divisors (see below), whose sum is σ = 688735176. Its totient is φ = 344367584.

The previous prime is 516551369. The next prime is 516551429. The reversal of 516551379 is 973155615.

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 516551379 - 2¹³ = 516543187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 516551379.

It is not an unprimeable number, because it can be changed into a prime (516551359) 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, 86091894 + ... + 86091899.

It is an arithmetic number, because the mean of its divisors is an integer number (172183794).

Almost surely, 2^516551379 is an apocalyptic number.

516551379 is a deficient number, since it is larger than the sum of its proper divisors (172183797).

516551379 is a wasteful number, since it uses less digits than its factorization.

516551379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172183796.

The product of its digits is 141750, while the sum is 42.

The square root of 516551379 is about 22727.7666962682. The cubic root of 516551379 is about 802.3635202343.

The spelling of 516551379 in words is "five hundred sixteen million, five hundred fifty-one thousand, three hundred seventy-nine".