513045223 has 4 divisors (see below), whose sum is σ = 513151848. Its totient is φ = 512938600.

The previous prime is 513045191. The next prime is 513045229. The reversal of 513045223 is 322540315.

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 513045223 - 2⁵ = 513045191 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 (513045229) 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, 45736 + ... + 55837.

It is an arithmetic number, because the mean of its divisors is an integer number (128287962).

Almost surely, 2^513045223 is an apocalyptic number.

513045223 is a deficient number, since it is larger than the sum of its proper divisors (106625).

513045223 is a wasteful number, since it uses less digits than its factorization.

513045223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106624.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 513045223 is about 22650.5016059248. The cubic root of 513045223 is about 800.5440169523.

Adding to 513045223 its reverse (322540315), we get a palindrome (835585538).

The spelling of 513045223 in words is "five hundred thirteen million, forty-five thousand, two hundred twenty-three".