528761 has 4 divisors (see below), whose sum is σ = 531300. Its totient is φ = 526224.

The previous prime is 528719. The next prime is 528763. The reversal of 528761 is 167825.

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 469225 + 59536 = 685^2 + 244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-528761 is a prime.

It is a d-powerful number, because it can be written as 5⁸ + 2¹⁴ + 7⁶ + 8⁴ + 6 + 1 .

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (528763) 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, 926 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (132825).

2⁵²⁸⁷⁶¹ is an apocalyptic number.

It is an amenable number.

528761 is a deficient number, since it is larger than the sum of its proper divisors (2539).

528761 is a wasteful number, since it uses less digits than its factorization.

528761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538.

The product of its digits is 3360, while the sum is 29.

The square root of 528761 is about 727.1595423289. The cubic root of 528761 is about 80.8636123737.

The spelling of 528761 in words is "five hundred twenty-eight thousand, seven hundred sixty-one".