521262 has 48 divisors (see below), whose sum is σ = 1354320. Its totient is φ = 148176.

The previous prime is 521251. The next prime is 521267. The reversal of 521262 is 262125.

521262 is nontrivially palindromic in base 13.

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 (521267) by changing a digit.

521262 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2548 + ... + 2744.

It is an arithmetic number, because the mean of its divisors is an integer number (28215).

2⁵²¹²⁶² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677160).

521262 is an abundant number, since it is smaller than the sum of its proper divisors (833058).

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

521262 is a wasteful number, since it uses less digits than its factorization.

521262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 209 counting only the distinct ones).

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

The square root of 521262 is about 721.9847643822. The cubic root of 521262 is about 80.4795158970.

Adding to 521262 its reverse (262125), we get a palindrome (783387).

The spelling of 521262 in words is "five hundred twenty-one thousand, two hundred sixty-two".