804553 has 2 divisors, whose sum is σ = 804554. Its totient is φ = 804552.

The previous prime is 804541. The next prime is 804571. The reversal of 804553 is 355408.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499849 + 304704 = 707^2 + 552^2 .

It is a cyclic number.

It is not a de Polignac number, because 804553 - 2⁵ = 804521 is a prime.

It is a plaindrome in base 9 and base 13.

It is not a weakly prime, because it can be changed into another prime (804523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402276 + 402277.

It is an arithmetic number, because the mean of its divisors is an integer number (402277).

2⁸⁰⁴⁵⁵³ is an apocalyptic number.

It is an amenable number.

804553 is a deficient number, since it is larger than the sum of its proper divisors (1).

804553 is an equidigital number, since it uses as much as digits as its factorization.

804553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 804553 is about 896.9687842952. The cubic root of 804553 is about 93.0075532463.

The spelling of 804553 in words is "eight hundred four thousand, five hundred fifty-three".