513265187 has 2 divisors, whose sum is σ = 513265188. Its totient is φ = 513265186.

The previous prime is 513265153. The next prime is 513265199. The reversal of 513265187 is 781562315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513265187 - 2¹⁰ = 513264163 is a prime.

It is a super-2 number, since 2×513265187² = 526882304372289938, which contains 22 as substring.

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 513265187.

It is not a weakly prime, because it can be changed into another prime (513265087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256632593 + 256632594.

It is an arithmetic number, because the mean of its divisors is an integer number (256632594).

Almost surely, 2^513265187 is an apocalyptic number.

513265187 is a deficient number, since it is larger than the sum of its proper divisors (1).

513265187 is an equidigital number, since it uses as much as digits as its factorization.

513265187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 38.

The square root of 513265187 is about 22655.3566954926. The cubic root of 513265187 is about 800.6584095349.

The spelling of 513265187 in words is "five hundred thirteen million, two hundred sixty-five thousand, one hundred eighty-seven".