5991903 has 12 divisors (see below), whose sum is σ = 8777808. Its totient is φ = 3937920.

The previous prime is 5991901. The next prime is 5991907. The reversal of 5991903 is 3091995.

It is not a de Polignac number, because 5991903 - 2¹ = 5991901 is a prime.

It is a super-2 number, since 2×5991903² = 71805803122818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5991901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4050 + ... + 5327.

It is an arithmetic number, because the mean of its divisors is an integer number (731484).

Almost surely, 2^5991903 is an apocalyptic number.

5991903 is a deficient number, since it is larger than the sum of its proper divisors (2785905).

5991903 is a wasteful number, since it uses less digits than its factorization.

5991903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454 (or 9451 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 5991903 is about 2447.8363915916. The cubic root of 5991903 is about 181.6302823448.

The spelling of 5991903 in words is "five million, nine hundred ninety-one thousand, nine hundred three".