513288137 has 4 divisors (see below), whose sum is σ = 515102160. Its totient is φ = 511474116.

The previous prime is 513288133. The next prime is 513288169. The reversal of 513288137 is 731882315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 513288137 - 2² = 513288133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513288137.

It is not an unprimeable number, because it can be changed into a prime (513288131) 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, 906587 + ... + 907152.

It is an arithmetic number, because the mean of its divisors is an integer number (128775540).

Almost surely, 2^513288137 is an apocalyptic number.

It is an amenable number.

513288137 is a deficient number, since it is larger than the sum of its proper divisors (1814023).

513288137 is a wasteful number, since it uses less digits than its factorization.

513288137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814022.

The product of its digits is 40320, while the sum is 38.

The square root of 513288137 is about 22655.8631925601. The cubic root of 513288137 is about 800.6703428312.

The spelling of 513288137 in words is "five hundred thirteen million, two hundred eighty-eight thousand, one hundred thirty-seven".