553999 has 4 divisors (see below), whose sum is σ = 558360. Its totient is φ = 549640.

The previous prime is 553991. The next prime is 554003. The reversal of 553999 is 999355.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 553999 - 2³ = 553991 is a prime.

It is a Duffinian number.

553999 is a modest number, since divided by 999 gives 553 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984 + ... + 2245.

It is an arithmetic number, because the mean of its divisors is an integer number (139590).

2⁵⁵³⁹⁹⁹ is an apocalyptic number.

553999 is a deficient number, since it is larger than the sum of its proper divisors (4361).

553999 is a wasteful number, since it uses less digits than its factorization.

553999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360.

The product of its digits is 54675, while the sum is 40.

The square root of 553999 is about 744.3110908753. The cubic root of 553999 is about 82.1302214068.

The spelling of 553999 in words is "five hundred fifty-three thousand, nine hundred ninety-nine".