5538993 has 4 divisors (see below), whose sum is σ = 7385328. Its totient is φ = 3692660.

The previous prime is 5538989. The next prime is 5539019. The reversal of 5538993 is 3998355.

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 5538993 - 2² = 5538989 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5538943) 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, 923163 + ... + 923168.

It is an arithmetic number, because the mean of its divisors is an integer number (1846332).

Almost surely, 2^5538993 is an apocalyptic number.

It is an amenable number.

5538993 is a deficient number, since it is larger than the sum of its proper divisors (1846335).

5538993 is a wasteful number, since it uses less digits than its factorization.

5538993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846334.

The product of its digits is 145800, while the sum is 42.

The square root of 5538993 is about 2353.5065328144. The cubic root of 5538993 is about 176.9335829203.

The spelling of 5538993 in words is "five million, five hundred thirty-eight thousand, nine hundred ninety-three".