521713712 has 40 divisors (see below), whose sum is σ = 1126125840. Its totient is φ = 232485120.

The previous prime is 521713693. The next prime is 521713729. The reversal of 521713712 is 217317125.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 7 ways as a sum of consecutive naturals, for example, 37214 + ... + 49277.

It is an arithmetic number, because the mean of its divisors is an integer number (28153146).

Almost surely, 2^521713712 is an apocalyptic number.

521713712 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

521713712 is an abundant number, since it is smaller than the sum of its proper divisors (604412128).

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

521713712 is a wasteful number, since it uses less digits than its factorization.

521713712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86541 (or 86535 counting only the distinct ones).

The product of its digits is 2940, while the sum is 29.

The square root of 521713712 is about 22841.0532156466. The cubic root of 521713712 is about 805.0275633220.

The spelling of 521713712 in words is "five hundred twenty-one million, seven hundred thirteen thousand, seven hundred twelve".