828557 has 2 divisors, whose sum is σ = 828558. Its totient is φ = 828556.

The previous prime is 828547. The next prime is 828577. The reversal of 828557 is 755828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481636 + 346921 = 694^2 + 589^2 .

It is a cyclic number.

It is not a de Polignac number, because 828557 - 2¹⁴ = 812173 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 8³ + 2⁸ + 5² + 8⁴ + 5³ + 7⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414278 + 414279.

It is an arithmetic number, because the mean of its divisors is an integer number (414279).

2⁸²⁸⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

828557 is a deficient number, since it is larger than the sum of its proper divisors (1).

828557 is an equidigital number, since it uses as much as digits as its factorization.

828557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 35.

The square root of 828557 is about 910.2510642674. The cubic root of 828557 is about 93.9234702289.

The spelling of 828557 in words is "eight hundred twenty-eight thousand, five hundred fifty-seven".