513409487 has 4 divisors (see below), whose sum is σ = 513466800. Its totient is φ = 513352176.

The previous prime is 513409451. The next prime is 513409493. The reversal of 513409487 is 784904315.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 513409487 - 2⁶ = 513409423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513409187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11987 + ... + 34212.

It is an arithmetic number, because the mean of its divisors is an integer number (128366700).

Almost surely, 2^513409487 is an apocalyptic number.

513409487 is a deficient number, since it is larger than the sum of its proper divisors (57313).

513409487 is a wasteful number, since it uses less digits than its factorization.

513409487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57312.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 513409487 is about 22658.5411489796. The cubic root of 513409487 is about 800.7334351980.

The spelling of 513409487 in words is "five hundred thirteen million, four hundred nine thousand, four hundred eighty-seven".