513441745 has 4 divisors (see below), whose sum is σ = 616130100. Its totient is φ = 410753392.

The previous prime is 513441739. The next prime is 513441751. The reversal of 513441745 is 547144315.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (513441739) and next prime (513441751).

It can be written as a sum of positive squares in 2 ways, for example, as 209323024 + 304118721 = 14468^2 + 17439^2 .

It is a cyclic number.

It is not a de Polignac number, because 513441745 - 2³ = 513441737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513441745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51344170 + ... + 51344179.

It is an arithmetic number, because the mean of its divisors is an integer number (154032525).

Almost surely, 2^513441745 is an apocalyptic number.

It is an amenable number.

513441745 is a deficient number, since it is larger than the sum of its proper divisors (102688355).

513441745 is a wasteful number, since it uses less digits than its factorization.

513441745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102688354.

The product of its digits is 33600, while the sum is 34.

The square root of 513441745 is about 22659.2529665036. The cubic root of 513441745 is about 800.7502051246.

The spelling of 513441745 in words is "five hundred thirteen million, four hundred forty-one thousand, seven hundred forty-five".