515530342 has 4 divisors (see below), whose sum is σ = 773295516. Its totient is φ = 257765170.

The previous prime is 515530333. The next prime is 515530343. The reversal of 515530342 is 243035515.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 515530342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515530343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128882584 + ... + 128882587.

It is an arithmetic number, because the mean of its divisors is an integer number (193323879).

Almost surely, 2^515530342 is an apocalyptic number.

515530342 is a deficient number, since it is larger than the sum of its proper divisors (257765174).

515530342 is a wasteful number, since it uses less digits than its factorization.

515530342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257765173.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 515530342 is about 22705.2932595023. The cubic root of 515530342 is about 801.8345097934.

Adding to 515530342 its reverse (243035515), we get a palindrome (758565857).

The spelling of 515530342 in words is "five hundred fifteen million, five hundred thirty thousand, three hundred forty-two".