513855563 has 8 divisors (see below), whose sum is σ = 553576128. Its totient is φ = 474162624.

The previous prime is 513855557. The next prime is 513855569. The reversal of 513855563 is 365558315.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (513855557) and next prime (513855569).

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

It is not a de Polignac number, because 513855563 - 2²⁴ = 497078347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513855563.

It is not an unprimeable number, because it can be changed into a prime (513855569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47870 + ... + 57612.

It is an arithmetic number, because the mean of its divisors is an integer number (69197016).

Almost surely, 2^513855563 is an apocalyptic number.

513855563 is a deficient number, since it is larger than the sum of its proper divisors (39720565).

513855563 is a wasteful number, since it uses less digits than its factorization.

513855563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13813.

The product of its digits is 270000, while the sum is 41.

The square root of 513855563 is about 22668.3824522174. The cubic root of 513855563 is about 800.9652739019.

The spelling of 513855563 in words is "five hundred thirteen million, eight hundred fifty-five thousand, five hundred sixty-three".