521552064 has 56 divisors (see below), whose sum is σ = 1505395008. Its totient is φ = 158045440.

The previous prime is 521551937. The next prime is 521552069. The reversal of 521552064 is 460255125.

It is not an unprimeable number, because it can be changed into a prime (521552069) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 121362 + ... + 125585.

Almost surely, 2^521552064 is an apocalyptic number.

It is an amenable number.

521552064 is an abundant number, since it is smaller than the sum of its proper divisors (983842944).

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

521552064 is a wasteful number, since it uses less digits than its factorization.

521552064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246973 (or 246963 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 521552064 is about 22837.5144006523. The cubic root of 521552064 is about 804.9444113718.

The spelling of 521552064 in words is "five hundred twenty-one million, five hundred fifty-two thousand, sixty-four".