521046 has 16 divisors (see below), whose sum is σ = 1158000. Its totient is φ = 173664.

The previous prime is 521041. The next prime is 521047. The reversal of 521046 is 640125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521041) by changing a digit.

521046 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 4771 + ... + 4878.

It is an arithmetic number, because the mean of its divisors is an integer number (72375).

2⁵²¹⁰⁴⁶ is an apocalyptic number.

521046 is an abundant number, since it is smaller than the sum of its proper divisors (636954).

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

521046 is a wasteful number, since it uses less digits than its factorization.

521046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9660 (or 9654 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 521046 is about 721.8351612384. The cubic root of 521046 is about 80.4683980222.

The spelling of 521046 in words is "five hundred twenty-one thousand, forty-six".