515388 has 24 divisors (see below), whose sum is σ = 1244880. Its totient is φ = 165760.

The previous prime is 515381. The next prime is 515401. The reversal of 515388 is 883515.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 515388.

It is not an unprimeable number, because it can be changed into a prime (515381) by changing a digit.

515388 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, 393 + ... + 1088.

It is an arithmetic number, because the mean of its divisors is an integer number (51870).

2⁵¹⁵³⁸⁸ is an apocalyptic number.

515388 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

515388 is an abundant number, since it is smaller than the sum of its proper divisors (729492).

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

515388 is a wasteful number, since it uses less digits than its factorization.

515388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1515 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 515388 is about 717.9052862321. The cubic root of 515388 is about 80.1760705386.

It can be divided in two parts, 515 and 388, that added together give a triangular number (903 = T₄₂).

The spelling of 515388 in words is "five hundred fifteen thousand, three hundred eighty-eight".