513286087 has 4 divisors (see below), whose sum is σ = 513793800. Its totient is φ = 512778376.

The previous prime is 513286069. The next prime is 513286091. The reversal of 513286087 is 780682315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 513286087 - 2¹⁵ = 513253319 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513286057) 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 in 3 ways as a sum of consecutive naturals, for example, 252337 + ... + 254362.

It is an arithmetic number, because the mean of its divisors is an integer number (128448450).

Almost surely, 2^513286087 is an apocalyptic number.

513286087 is a deficient number, since it is larger than the sum of its proper divisors (507713).

513286087 is a wasteful number, since it uses less digits than its factorization.

513286087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507712.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 513286087 is about 22655.8179503632. The cubic root of 513286087 is about 800.6692769086.

It can be divided in two parts, 5132 and 86087, that added together give a palindrome (91219).

The spelling of 513286087 in words is "five hundred thirteen million, two hundred eighty-six thousand, eighty-seven".