521044 has 6 divisors (see below), whose sum is σ = 911834. Its totient is φ = 260520.

The previous prime is 521041. The next prime is 521047. The reversal of 521044 is 440125.

It is an interprime number because it is at equal distance from previous prime (521041) and next prime (521047).

It can be written as a sum of positive squares in only one way, i.e., 476100 + 44944 = 690^2 + 212^2 .

It is a congruent number.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65127 + ... + 65134.

2⁵²¹⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

521044 is a deficient number, since it is larger than the sum of its proper divisors (390790).

521044 is a wasteful number, since it uses less digits than its factorization.

521044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130265 (or 130263 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 521044 is about 721.8337758792. The cubic root of 521044 is about 80.4682950645.

Adding to 521044 its reverse (440125), we get a palindrome (961169).

The spelling of 521044 in words is "five hundred twenty-one thousand, forty-four".