515138 has 8 divisors (see below), whose sum is σ = 832188. Its totient is φ = 237744.

The previous prime is 515111. The next prime is 515143. The reversal of 515138 is 831515.

It can be written as a sum of positive squares in 2 ways, for example, as 368449 + 146689 = 607^2 + 383^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 515138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9881 + ... + 9932.

2⁵¹⁵¹³⁸ is an apocalyptic number.

515138 is a deficient number, since it is larger than the sum of its proper divisors (317050).

515138 is a wasteful number, since it uses less digits than its factorization.

515138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19828.

The product of its digits is 600, while the sum is 23.

The square root of 515138 is about 717.7311474361. The cubic root of 515138 is about 80.1631047346.

The spelling of 515138 in words is "five hundred fifteen thousand, one hundred thirty-eight".