557803 has 2 divisors, whose sum is σ = 557804. Its totient is φ = 557802.

The previous prime is 557801. The next prime is 557831. The reversal of 557803 is 308755.

It is an a-pointer prime, because the next prime (557831) can be obtained adding 557803 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557803 - 2¹ = 557801 is a prime.

It is a super-2 number, since 2×557803² = 622288373618, which contains 22 as substring.

Together with 557801, it forms a pair of twin primes.

557803 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (557801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278901 + 278902.

It is an arithmetic number, because the mean of its divisors is an integer number (278902).

2⁵⁵⁷⁸⁰³ is an apocalyptic number.

557803 is a deficient number, since it is larger than the sum of its proper divisors (1).

557803 is an equidigital number, since it uses as much as digits as its factorization.

557803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 557803 is about 746.8621023991. The cubic root of 557803 is about 82.3177734897.

The spelling of 557803 in words is "five hundred fifty-seven thousand, eight hundred three".