516122109 has 12 divisors (see below), whose sum is σ = 759576636. Its totient is φ = 337588992.

The previous prime is 516122107. The next prime is 516122111. The reversal of 516122109 is 901221615.

It is an interprime number because it is at equal distance from previous prime (516122107) and next prime (516122111).

It can be written as a sum of positive squares in 2 ways, for example, as 208224900 + 307897209 = 14430^2 + 17547^2 .

It is not a de Polignac number, because 516122109 - 2¹ = 516122107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516122107) 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 11 ways as a sum of consecutive naturals, for example, 540532 + ... + 541485.

It is an arithmetic number, because the mean of its divisors is an integer number (63298053).

Almost surely, 2^516122109 is an apocalyptic number.

It is an amenable number.

516122109 is a deficient number, since it is larger than the sum of its proper divisors (243454527).

516122109 is a wasteful number, since it uses less digits than its factorization.

516122109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082076 (or 1082073 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 516122109 is about 22718.3209987006. The cubic root of 516122109 is about 802.1411957588.

The spelling of 516122109 in words is "five hundred sixteen million, one hundred twenty-two thousand, one hundred nine".