5538991 has 8 divisors (see below), whose sum is σ = 5927040. Its totient is φ = 5157888.

The previous prime is 5538989. The next prime is 5539019. The reversal of 5538991 is 1998355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5538991 - 2¹ = 5538989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5538901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31 + ... + 3328.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^5538991 is an apocalyptic number.

5538991 is a deficient number, since it is larger than the sum of its proper divisors (388049).

5538991 is a wasteful number, since it uses less digits than its factorization.

5538991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473.

The product of its digits is 48600, while the sum is 40.

The square root of 5538991 is about 2353.5061079164. The cubic root of 5538991 is about 176.9335616248.

The spelling of 5538991 in words is "five million, five hundred thirty-eight thousand, nine hundred ninety-one".