513209071 has 2 divisors, whose sum is σ = 513209072. Its totient is φ = 513209070.

The previous prime is 513209069. The next prime is 513209077. The reversal of 513209071 is 170902315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513209071 - 2¹ = 513209069 is a prime.

Together with 513209069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513209077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256604535 + 256604536.

It is an arithmetic number, because the mean of its divisors is an integer number (256604536).

Almost surely, 2^513209071 is an apocalyptic number.

513209071 is a deficient number, since it is larger than the sum of its proper divisors (1).

513209071 is an equidigital number, since it uses as much as digits as its factorization.

513209071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 513209071 is about 22654.1181907396. The cubic root of 513209071 is about 800.6292294373.

The spelling of 513209071 in words is "five hundred thirteen million, two hundred nine thousand, seventy-one".