553856 has 16 divisors (see below), whose sum is σ = 1103640. Its totient is φ = 276864.

The previous prime is 553849. The next prime is 553867. The reversal of 553856 is 658355.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

553856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2036 + ... + 2291.

2⁵⁵³⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

553856 is a deficient number, since it is larger than the sum of its proper divisors (549784).

553856 is an equidigital number, since it uses as much as digits as its factorization.

553856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341 (or 4329 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 553856 is about 744.2150226917. The cubic root of 553856 is about 82.1231542266.

The spelling of 553856 in words is "five hundred fifty-three thousand, eight hundred fifty-six".