513342847 has 4 divisors (see below), whose sum is σ = 527217016. Its totient is φ = 499468680.

The previous prime is 513342827. The next prime is 513342859. The reversal of 513342847 is 748243315.

It is a happy number.

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 513342847 - 2²³ = 504954239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 13874131 = 513342847 / (5 + 1 + 3 + 3 + 4 + 2 + 8 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513342827) 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, 6937029 + ... + 6937102.

It is an arithmetic number, because the mean of its divisors is an integer number (131804254).

Almost surely, 2^513342847 is an apocalyptic number.

513342847 is a deficient number, since it is larger than the sum of its proper divisors (13874169).

513342847 is a wasteful number, since it uses less digits than its factorization.

513342847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13874168.

The product of its digits is 80640, while the sum is 37.

The square root of 513342847 is about 22657.0705741056. The cubic root of 513342847 is about 800.6987889190.

The spelling of 513342847 in words is "five hundred thirteen million, three hundred forty-two thousand, eight hundred forty-seven".