528491 has 2 divisors, whose sum is σ = 528492. Its totient is φ = 528490.

The previous prime is 528487. The next prime is 528509. The reversal of 528491 is 194825.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 528491 - 2² = 528487 is a prime.

It is a d-powerful number, because it can be written as 5² + 2¹⁸ + 4⁹ + 8⁴ + 9² + 1 .

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (528401) 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 as a sum of consecutive naturals, namely, 264245 + 264246.

It is an arithmetic number, because the mean of its divisors is an integer number (264246).

2⁵²⁸⁴⁹¹ is an apocalyptic number.

528491 is a deficient number, since it is larger than the sum of its proper divisors (1).

528491 is an equidigital number, since it uses as much as digits as its factorization.

528491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 528491 is about 726.9738647297. The cubic root of 528491 is about 80.8498462976.

The spelling of 528491 in words is "five hundred twenty-eight thousand, four hundred ninety-one".