528641 has 4 divisors (see below), whose sum is σ = 546900. Its totient is φ = 510384.

The previous prime is 528631. The next prime is 528659. The reversal of 528641 is 146825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450241 + 78400 = 671^2 + 280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-528641 is a prime.

It is a super-2 number, since 2×528641² = 558922613762, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 528641.

It is not an unprimeable number, because it can be changed into a prime (528611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9086 + ... + 9143.

It is an arithmetic number, because the mean of its divisors is an integer number (136725).

2⁵²⁸⁶⁴¹ is an apocalyptic number.

It is an amenable number.

528641 is a deficient number, since it is larger than the sum of its proper divisors (18259).

528641 is a wasteful number, since it uses less digits than its factorization.

528641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18258.

The product of its digits is 1920, while the sum is 26.

The square root of 528641 is about 727.0770248055. The cubic root of 528641 is about 80.8574946963.

The spelling of 528641 in words is "five hundred twenty-eight thousand, six hundred forty-one".