515394 has 48 divisors (see below), whose sum is σ = 1291680. Its totient is φ = 146880.

The previous prime is 515381. The next prime is 515401. The reversal of 515394 is 493515.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3694 + ... + 3830.

It is an arithmetic number, because the mean of its divisors is an integer number (26910).

2⁵¹⁵³⁹⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645840).

515394 is an abundant number, since it is smaller than the sum of its proper divisors (776286).

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

515394 is a wasteful number, since it uses less digits than its factorization.

515394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 172 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 515394 is about 717.9094650442. The cubic root of 515394 is about 80.1763816664.

It can be divided in two parts, 515 and 394, that added together give a palindrome (909).

The spelling of 515394 in words is "five hundred fifteen thousand, three hundred ninety-four".