513113145 has 16 divisors (see below), whose sum is σ = 864191040. Its totient is φ = 259257024.

The previous prime is 513113129. The next prime is 513113149. The reversal of 513113145 is 541311315.

It is not a de Polignac number, because 513113145 - 2⁴ = 513113129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (513113149) 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 15 ways as a sum of consecutive naturals, for example, 899914 + ... + 900483.

It is an arithmetic number, because the mean of its divisors is an integer number (54011940).

Almost surely, 2^513113145 is an apocalyptic number.

It is an amenable number.

513113145 is a deficient number, since it is larger than the sum of its proper divisors (351077895).

513113145 is a wasteful number, since it uses less digits than its factorization.

513113145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800424.

The product of its digits is 900, while the sum is 24.

The square root of 513113145 is about 22652.0009049973. Note that the first 3 decimals coincide. The cubic root of 513113145 is about 800.5793433711.

The spelling of 513113145 in words is "five hundred thirteen million, one hundred thirteen thousand, one hundred forty-five".