521363125 has 10 divisors (see below), whose sum is σ = 651496142. Its totient is φ = 417090000.

The previous prime is 521363083. The next prime is 521363179.

521363125 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 5 ways, for example, as 386594244 + 134768881 = 19662^2 + 11609^2 .

It is not a de Polignac number, because 521363125 - 2¹⁵ = 521330357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521363093 and 521363102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 416466 + ... + 417715.

Almost surely, 2^521363125 is an apocalyptic number.

It is an amenable number.

521363125 is a deficient number, since it is larger than the sum of its proper divisors (130133017).

521363125 is an frugal number, since it uses more digits than its factorization.

521363125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834201 (or 834186 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 521363125 is about 22833.3774330474. The cubic root of 521363125 is about 804.8471991142.

The spelling of 521363125 in words is "five hundred twenty-one million, three hundred sixty-three thousand, one hundred twenty-five".