513563165 has 8 divisors (see below), whose sum is σ = 617742168. Its totient is φ = 409872960.

The previous prime is 513563153. The next prime is 513563173. The reversal of 513563165 is 561365315.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34916281 + 478646884 = 5909^2 + 21878^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 513563165 - 2¹⁰ = 513562141 is a prime.

It is a Duffinian number.

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, 119882 + ... + 124091.

It is an arithmetic number, because the mean of its divisors is an integer number (77217771).

Almost surely, 2^513563165 is an apocalyptic number.

It is an amenable number.

513563165 is a deficient number, since it is larger than the sum of its proper divisors (104179003).

513563165 is a wasteful number, since it uses less digits than its factorization.

513563165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244399.

The product of its digits is 40500, while the sum is 35.

The square root of 513563165 is about 22661.9320667943. The cubic root of 513563165 is about 800.8133212929.

The spelling of 513563165 in words is "five hundred thirteen million, five hundred sixty-three thousand, one hundred sixty-five".