513123064 has 32 divisors (see below), whose sum is σ = 984571200. Its totient is φ = 250593280.

The previous prime is 513123029. The next prime is 513123073. The reversal of 513123064 is 460321315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239952 + ... + 242080.

It is an arithmetic number, because the mean of its divisors is an integer number (30767850).

Almost surely, 2^513123064 is an apocalyptic number.

It is an amenable number.

513123064 is a deficient number, since it is larger than the sum of its proper divisors (471448136).

513123064 is a wasteful number, since it uses less digits than its factorization.

513123064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 513123064 is about 22652.2198470702. The cubic root of 513123064 is about 800.5845020094.

Adding to 513123064 its reverse (460321315), we get a palindrome (973444379).

The spelling of 513123064 in words is "five hundred thirteen million, one hundred twenty-three thousand, sixty-four".