528431 has 4 divisors (see below), whose sum is σ = 535200. Its totient is φ = 521664.

The previous prime is 528419. The next prime is 528433. The reversal of 528431 is 134825.

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

It is a cyclic number.

It is not a de Polignac number, because 528431 - 2¹⁰ = 527407 is a prime.

It is a super-2 number, since 2×528431² = 558478643522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 528397 and 528406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3266 + ... + 3423.

It is an arithmetic number, because the mean of its divisors is an integer number (133800).

2⁵²⁸⁴³¹ is an apocalyptic number.

528431 is a deficient number, since it is larger than the sum of its proper divisors (6769).

528431 is an equidigital number, since it uses as much as digits as its factorization.

528431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768.

The product of its digits is 960, while the sum is 23.

The square root of 528431 is about 726.9325966003. The cubic root of 528431 is about 80.8467865328.

It can be divided in two parts, 528 and 431, that added together give a palindrome (959).

The spelling of 528431 in words is "five hundred twenty-eight thousand, four hundred thirty-one".