521055441 has 12 divisors (see below), whose sum is σ = 778588980. Its totient is φ = 335391840.

The previous prime is 521055433. The next prime is 521055523. The reversal of 521055441 is 144550125.

521055441 is a `hidden beast` number, since 5 + 210 + 5 + 5 + 441 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 424524816 + 96530625 = 20604^2 + 9825^2 .

It is not a de Polignac number, because 521055441 - 2³ = 521055433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521055341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 997930 + ... + 998451.

It is an arithmetic number, because the mean of its divisors is an integer number (64882415).

Almost surely, 2^521055441 is an apocalyptic number.

It is an amenable number.

521055441 is a deficient number, since it is larger than the sum of its proper divisors (257533539).

521055441 is a wasteful number, since it uses less digits than its factorization.

521055441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996416 (or 1996413 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 521055441 is about 22826.6388458748. The cubic root of 521055441 is about 804.6888403014.

The spelling of 521055441 in words is "five hundred twenty-one million, fifty-five thousand, four hundred forty-one".