515379 has 4 divisors (see below), whose sum is σ = 687176. Its totient is φ = 343584.

The previous prime is 515377. The next prime is 515381. The reversal of 515379 is 973515.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (515377) and next prime (515381).

It is not a de Polignac number, because 515379 - 2¹ = 515377 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515371) 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 3 ways as a sum of consecutive naturals, for example, 85894 + ... + 85899.

It is an arithmetic number, because the mean of its divisors is an integer number (171794).

2⁵¹⁵³⁷⁹ is an apocalyptic number.

515379 is a deficient number, since it is larger than the sum of its proper divisors (171797).

515379 is a wasteful number, since it uses less digits than its factorization.

515379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171796.

The product of its digits is 4725, while the sum is 30.

The square root of 515379 is about 717.8990179684. The cubic root of 515379 is about 80.1756038424.

The spelling of 515379 in words is "five hundred fifteen thousand, three hundred seventy-nine".