521363106 has 72 divisors (see below), whose sum is σ = 1314780012. Its totient is φ = 148684800.

The previous prime is 521363083. The next prime is 521363179. The reversal of 521363106 is 601363125.

521363106 is a `hidden beast` number, since 5 + 21 + 3 + 631 + 0 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 467208225 + 54154881 = 21615^2 + 7359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 521363106.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29986 + ... + 44066.

Almost surely, 2^521363106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521363106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657390006).

521363106 is an abundant number, since it is smaller than the sum of its proper divisors (793416906).

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

521363106 is a wasteful number, since it uses less digits than its factorization.

521363106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14128 (or 14114 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 521363106 is about 22833.3770169898. The cubic root of 521363106 is about 804.8471893372.

The spelling of 521363106 in words is "five hundred twenty-one million, three hundred sixty-three thousand, one hundred six".