515530542 has 64 divisors (see below), whose sum is σ = 1116244800. Its totient is φ = 158146560.

The previous prime is 515530541. The next prime is 515530607. The reversal of 515530542 is 245035515.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515530541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 989242 + ... + 989762.

It is an arithmetic number, because the mean of its divisors is an integer number (17441325).

Almost surely, 2^515530542 is an apocalyptic number.

515530542 is an abundant number, since it is smaller than the sum of its proper divisors (600714258).

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

515530542 is a wasteful number, since it uses less digits than its factorization.

515530542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 515530542 is about 22705.2976637612. The cubic root of 515530542 is about 801.8346134839.

The spelling of 515530542 in words is "five hundred fifteen million, five hundred thirty thousand, five hundred forty-two".