515490 has 16 divisors (see below), whose sum is σ = 1237248. Its totient is φ = 137456.

The previous prime is 515477. The next prime is 515507. The reversal of 515490 is 94515.

It is a self number, because there is not a number n which added to its sum of digits gives 515490.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8562 + ... + 8621.

It is an arithmetic number, because the mean of its divisors is an integer number (77328).

2⁵¹⁵⁴⁹⁰ is an apocalyptic number.

515490 is an abundant number, since it is smaller than the sum of its proper divisors (721758).

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

515490 is a wasteful number, since it uses less digits than its factorization.

515490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17193.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 515490 is about 717.9763227294. The cubic root of 515490 is about 80.1813593823.

The spelling of 515490 in words is "five hundred fifteen thousand, four hundred ninety".