513055 has 4 divisors (see below), whose sum is σ = 615672. Its totient is φ = 410440.

The previous prime is 513053. The next prime is 513059. The reversal of 513055 is 550315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550315 = 5 ⋅110063.

It is not a de Polignac number, because 513055 - 2¹ = 513053 is a prime.

It is a Duffinian number.

513055 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513053) 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, 51301 + ... + 51310.

It is an arithmetic number, because the mean of its divisors is an integer number (153918).

2⁵¹³⁰⁵⁵ is an apocalyptic number.

513055 is a deficient number, since it is larger than the sum of its proper divisors (102617).

513055 is a wasteful number, since it uses less digits than its factorization.

513055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102616.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 513055 is about 716.2785770913. The cubic root of 513055 is about 80.0549102189.

The spelling of 513055 in words is "five hundred thirteen thousand, fifty-five".