521230 has 16 divisors (see below), whose sum is σ = 959040. Its totient is φ = 203872.

The previous prime is 521201. The next prime is 521231. The reversal of 521230 is 32125.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 521230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 1024.

It is an arithmetic number, because the mean of its divisors is an integer number (59940).

2⁵²¹²³⁰ is an apocalyptic number.

521230 is a deficient number, since it is larger than the sum of its proper divisors (437810).

521230 is a wasteful number, since it uses less digits than its factorization.

521230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 521230 is about 721.9626029096. The cubic root of 521230 is about 80.4778689983.

Adding to 521230 its reverse (32125), we get a palindrome (553355).

The spelling of 521230 in words is "five hundred twenty-one thousand, two hundred thirty".