521288 has 16 divisors (see below), whose sum is σ = 1035180. Its totient is φ = 245248.

The previous prime is 521281. The next prime is 521299. The reversal of 521288 is 882125.

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 4 = 722^2 + 2^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521288.

It is not an unprimeable number, because it can be changed into a prime (521281) by changing a digit.

521288 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 3 ways as a sum of consecutive naturals, for example, 1781 + ... + 2052.

2⁵²¹²⁸⁸ is an apocalyptic number.

It is an amenable number.

521288 is a deficient number, since it is larger than the sum of its proper divisors (513892).

521288 is a wasteful number, since it uses less digits than its factorization.

521288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3852 counting only the distinct ones).

The product of its digits is 1280, while the sum is 26.

The square root of 521288 is about 722.0027700778. The cubic root of 521288 is about 80.4808539527.

The spelling of 521288 in words is "five hundred twenty-one thousand, two hundred eighty-eight".