857573 has 2 divisors, whose sum is σ = 857574. Its totient is φ = 857572.

The previous prime is 857569. The next prime is 857579. The reversal of 857573 is 375758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 643204 + 214369 = 802^2 + 463^2 .

It is a cyclic number.

It is not a de Polignac number, because 857573 - 2² = 857569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428786 + 428787.

It is an arithmetic number, because the mean of its divisors is an integer number (428787).

2⁸⁵⁷⁵⁷³ is an apocalyptic number.

It is an amenable number.

857573 is a deficient number, since it is larger than the sum of its proper divisors (1).

857573 is an equidigital number, since it uses as much as digits as its factorization.

857573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 35.

The square root of 857573 is about 926.0523743288. The cubic root of 857573 is about 95.0073124565.

The spelling of 857573 in words is "eight hundred fifty-seven thousand, five hundred seventy-three".