521055473 has 16 divisors (see below), whose sum is σ = 539774976. Its totient is φ = 502770240.

The previous prime is 521055433. The next prime is 521055523. The reversal of 521055473 is 374550125.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521055473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521055433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797615 + ... + 798267.

It is an arithmetic number, because the mean of its divisors is an integer number (33735936).

Almost surely, 2^521055473 is an apocalyptic number.

It is an amenable number.

521055473 is a deficient number, since it is larger than the sum of its proper divisors (18719503).

521055473 is a wasteful number, since it uses less digits than its factorization.

521055473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 521055473 is about 22826.6395468102. The cubic root of 521055473 is about 804.6888567744.

The spelling of 521055473 in words is "five hundred twenty-one million, fifty-five thousand, four hundred seventy-three".