521382082 has 16 divisors (see below), whose sum is σ = 842882040. Its totient is φ = 240452352.

The previous prime is 521382077. The next prime is 521382089. The reversal of 521382082 is 280283125.

It can be written as a sum of positive squares in 4 ways, for example, as 121022001 + 400360081 = 11001^2 + 20009^2 .

It is not an unprimeable number, because it can be changed into a prime (521382089) 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, 30138 + ... + 44170.

Almost surely, 2^521382082 is an apocalyptic number.

521382082 is a deficient number, since it is larger than the sum of its proper divisors (321499958).

521382082 is a wasteful number, since it uses less digits than its factorization.

521382082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15477.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 521382082 is about 22833.7925452606. The cubic root of 521382082 is about 804.8569538658.

The spelling of 521382082 in words is "five hundred twenty-one million, three hundred eighty-two thousand, eighty-two".