521161125 has 32 divisors (see below), whose sum is σ = 881467392. Its totient is φ = 273384000.

The previous prime is 521161093. The next prime is 521161133.

521161125 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 521161125 - 2⁵ = 521161093 is a prime.

It is a super-2 number, since 2×521161125² = 543217836422531250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 521161095 and 521161104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11484 + ... + 34266.

It is an arithmetic number, because the mean of its divisors is an integer number (27545856).

Almost surely, 2^521161125 is an apocalyptic number.

It is an amenable number.

521161125 is a deficient number, since it is larger than the sum of its proper divisors (360306267).

521161125 is a wasteful number, since it uses less digits than its factorization.

521161125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22862 (or 22852 counting only the distinct ones).

The product of its digits is 600, while the sum is 24.

The square root of 521161125 is about 22828.9536553912. The cubic root of 521161125 is about 804.7432407738.

The spelling of 521161125 in words is "five hundred twenty-one million, one hundred sixty-one thousand, one hundred twenty-five".