515113 has 4 divisors (see below), whose sum is σ = 516868. Its totient is φ = 513360.

The previous prime is 515111. The next prime is 515143. The reversal of 515113 is 311515.

515113 = 507² + 508².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311515 = 5 ⋅62303.

It can be written as a sum of positive squares in 2 ways, for example, as 257049 + 258064 = 507^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 515113 - 2¹ = 515111 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318 + ... + 1063.

It is an arithmetic number, because the mean of its divisors is an integer number (129217).

2⁵¹⁵¹¹³ is an apocalyptic number.

515113 is the 508-th centered square number.

It is an amenable number.

515113 is a deficient number, since it is larger than the sum of its proper divisors (1755).

515113 is a wasteful number, since it uses less digits than its factorization.

515113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754.

The product of its digits is 75, while the sum is 16.

The square root of 515113 is about 717.7137312327. The cubic root of 515113 is about 80.1618079235.

Adding to 515113 its reverse (311515), we get a palindrome (826628).

The spelling of 515113 in words is "five hundred fifteen thousand, one hundred thirteen".