515790 has 48 divisors (see below), whose sum is σ = 1465776. Its totient is φ = 124800.

The previous prime is 515783. The next prime is 515803. The reversal of 515790 is 97515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 730 + ... + 1250.

It is an arithmetic number, because the mean of its divisors is an integer number (30537).

2⁵¹⁵⁷⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732888).

515790 is an abundant number, since it is smaller than the sum of its proper divisors (949986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515790 is a wasteful number, since it uses less digits than its factorization.

515790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 515790 is about 718.1852128804. The cubic root of 515790 is about 80.1969107626.

The spelling of 515790 in words is "five hundred fifteen thousand, seven hundred ninety".