521234 has 16 divisors (see below), whose sum is σ = 923136. Its totient is φ = 216000.

The previous prime is 521231. The next prime is 521243. The reversal of 521234 is 432125.

It is a Smith number, since the sum of its digits (17) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a Curzon number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (57696).

2⁵²¹²³⁴ is an apocalyptic number.

521234 is a deficient number, since it is larger than the sum of its proper divisors (401902).

521234 is a wasteful number, since it uses less digits than its factorization.

521234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241.

The product of its digits is 240, while the sum is 17.

The square root of 521234 is about 721.9653731309. The cubic root of 521234 is about 80.4780748643.

Adding to 521234 its reverse (432125), we get a palindrome (953359).

The spelling of 521234 in words is "five hundred twenty-one thousand, two hundred thirty-four".