513417745 has 4 divisors (see below), whose sum is σ = 616101300. Its totient is φ = 410734192.

The previous prime is 513417743. The next prime is 513417763. The reversal of 513417745 is 547714315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 286252561 + 227165184 = 16919^2 + 15072^2 .

It is a cyclic number.

It is not a de Polignac number, because 513417745 - 2¹ = 513417743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513417743) 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, 51341770 + ... + 51341779.

It is an arithmetic number, because the mean of its divisors is an integer number (154025325).

Almost surely, 2^513417745 is an apocalyptic number.

It is an amenable number.

513417745 is a deficient number, since it is larger than the sum of its proper divisors (102683555).

513417745 is a wasteful number, since it uses less digits than its factorization.

513417745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102683554.

The product of its digits is 58800, while the sum is 37.

The square root of 513417745 is about 22658.7233753360. The cubic root of 513417745 is about 800.7377283412.

The spelling of 513417745 in words is "five hundred thirteen million, four hundred seventeen thousand, seven hundred forty-five".