521700712 has 16 divisors (see below), whose sum is σ = 1053434340. Its totient is φ = 240784896.

The previous prime is 521700679. The next prime is 521700713. The reversal of 521700712 is 217007125.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 500595876 + 21104836 = 22374^2 + 4594^2 .

It is not an unprimeable number, because it can be changed into a prime (521700713) by changing a digit.

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, 2508073 + ... + 2508280.

Almost surely, 2^521700712 is an apocalyptic number.

521700712 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

521700712 is an abundant number, since it is smaller than the sum of its proper divisors (531733628).

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

521700712 is a wasteful number, since it uses less digits than its factorization.

521700712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016372 (or 5016368 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 521700712 is about 22840.7686385551. The cubic root of 521700712 is about 805.0208767396.

Adding to 521700712 its reverse (217007125), we get a palindrome (738707837).

The spelling of 521700712 in words is "five hundred twenty-one million, seven hundred thousand, seven hundred twelve".