873553 has 2 divisors, whose sum is σ = 873554. Its totient is φ = 873552.

The previous prime is 873541. The next prime is 873569. The reversal of 873553 is 355378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 719104 + 154449 = 848^2 + 393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-873553 is a prime.

It is not a weakly prime, because it can be changed into another prime (871553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436776 + 436777.

It is an arithmetic number, because the mean of its divisors is an integer number (436777).

2⁸⁷³⁵⁵³ is an apocalyptic number.

It is an amenable number.

873553 is a deficient number, since it is larger than the sum of its proper divisors (1).

873553 is an equidigital number, since it uses as much as digits as its factorization.

873553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 31.

The square root of 873553 is about 934.6405726267. The cubic root of 873553 is about 95.5938060213.

The spelling of 873553 in words is "eight hundred seventy-three thousand, five hundred fifty-three".