516077909 has 2 divisors, whose sum is σ = 516077910. Its totient is φ = 516077908.

The previous prime is 516077899. The next prime is 516077963. The reversal of 516077909 is 909770615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335256100 + 180821809 = 18310^2 + 13447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516077909 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 516077909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516077999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258038954 + 258038955.

It is an arithmetic number, because the mean of its divisors is an integer number (258038955).

Almost surely, 2^516077909 is an apocalyptic number.

It is an amenable number.

516077909 is a deficient number, since it is larger than the sum of its proper divisors (1).

516077909 is an equidigital number, since it uses as much as digits as its factorization.

516077909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 516077909 is about 22717.3481947167. The cubic root of 516077909 is about 802.1182970091.

The spelling of 516077909 in words is "five hundred sixteen million, seventy-seven thousand, nine hundred nine".