521002412 has 24 divisors (see below), whose sum is σ = 1047836160. Its totient is φ = 222037200.

The previous prime is 521002411. The next prime is 521002421. The reversal of 521002412 is 214200125.

It is not an unprimeable number, because it can be changed into a prime (521002411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46964 + ... + 56987.

It is an arithmetic number, because the mean of its divisors is an integer number (43659840).

Almost surely, 2^521002412 is an apocalyptic number.

It is an amenable number.

521002412 is an abundant number, since it is smaller than the sum of its proper divisors (526833748).

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

521002412 is a wasteful number, since it uses less digits than its factorization.

521002412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104141 (or 104139 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 521002412 is about 22825.4772567848. The cubic root of 521002412 is about 804.6615410361.

Adding to 521002412 its reverse (214200125), we get a palindrome (735202537).

The spelling of 521002412 in words is "five hundred twenty-one million, two thousand, four hundred twelve".