553993 has 4 divisors (see below), whose sum is σ = 604368. Its totient is φ = 503620.

The previous prime is 553991. The next prime is 554003. The reversal of 553993 is 399355.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 553993 - 2¹ = 553991 is a prime.

It is an Ulam number.

It is a Duffinian number.

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

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 in 3 ways as a sum of consecutive naturals, for example, 25171 + ... + 25192.

It is an arithmetic number, because the mean of its divisors is an integer number (151092).

2⁵⁵³⁹⁹³ is an apocalyptic number.

It is an amenable number.

553993 is a deficient number, since it is larger than the sum of its proper divisors (50375).

553993 is a wasteful number, since it uses less digits than its factorization.

553993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50374.

The product of its digits is 18225, while the sum is 34.

The square root of 553993 is about 744.3070602917. The cubic root of 553993 is about 82.1299249062.

The spelling of 553993 in words is "five hundred fifty-three thousand, nine hundred ninety-three".