516552309 has 40 divisors (see below), whose sum is σ = 949724160. Its totient is φ = 272463264.

The previous prime is 516552247. The next prime is 516552319. The reversal of 516552309 is 903255615.

It is not a de Polignac number, because 516552309 - 2²³ = 508163701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516552319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27669 + ... + 42410.

It is an arithmetic number, because the mean of its divisors is an integer number (23743104).

Almost surely, 2^516552309 is an apocalyptic number.

It is an amenable number.

516552309 is a deficient number, since it is larger than the sum of its proper divisors (433171851).

516552309 is a wasteful number, since it uses less digits than its factorization.

516552309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70111 (or 70102 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 516552309 is about 22727.7871558144. The cubic root of 516552309 is about 802.3640017596.

The spelling of 516552309 in words is "five hundred sixteen million, five hundred fifty-two thousand, three hundred nine".