515568 has 40 divisors (see below), whose sum is σ = 1392768. Its totient is φ = 164032.

The previous prime is 515563. The next prime is 515579. The reversal of 515568 is 865515.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515563) by changing a digit.

515568 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 871 + ... + 1337.

2⁵¹⁵⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696384).

515568 is an abundant number, since it is smaller than the sum of its proper divisors (877200).

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

515568 is a wasteful number, since it uses less digits than its factorization.

515568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 495 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 515568 is about 718.0306400148. The cubic root of 515568 is about 80.1854033215.

The spelling of 515568 in words is "five hundred fifteen thousand, five hundred sixty-eight".