5811945 has 8 divisors (see below), whose sum is σ = 9299136. Its totient is φ = 3099696.

The previous prime is 5811937. The next prime is 5811959. The reversal of 5811945 is 5491185.

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

It is not a de Polignac number, because 5811945 - 2³ = 5811937 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193717 + ... + 193746.

It is an arithmetic number, because the mean of its divisors is an integer number (1162392).

Almost surely, 2^5811945 is an apocalyptic number.

It is an amenable number.

5811945 is a deficient number, since it is larger than the sum of its proper divisors (3487191).

5811945 is a wasteful number, since it uses less digits than its factorization.

5811945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387471.

The product of its digits is 7200, while the sum is 33.

The square root of 5811945 is about 2410.7975858624. The cubic root of 5811945 is about 179.7934358817.

The spelling of 5811945 in words is "five million, eight hundred eleven thousand, nine hundred forty-five".