521513152 has 28 divisors (see below), whose sum is σ = 1039546816. Its totient is φ = 259580160.

The previous prime is 521513129. The next prime is 521513183. The reversal of 521513152 is 251315125.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 3999 + ... + 32542.

It is an arithmetic number, because the mean of its divisors is an integer number (37126672).

Almost surely, 2^521513152 is an apocalyptic number.

It is an amenable number.

521513152 is a deficient number, since it is larger than the sum of its proper divisors (518033664).

521513152 is a wasteful number, since it uses less digits than its factorization.

521513152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36776 (or 36766 counting only the distinct ones).

The product of its digits is 1500, while the sum is 25.

The square root of 521513152 is about 22836.6624531695. The cubic root of 521513152 is about 804.9243924206.

Adding to 521513152 its reverse (251315125), we get a palindrome (772828277).

The spelling of 521513152 in words is "five hundred twenty-one million, five hundred thirteen thousand, one hundred fifty-two".