5981945 has 8 divisors (see below), whose sum is σ = 7345536. Its totient is φ = 4674096.

The previous prime is 5981939. The next prime is 5981947. The reversal of 5981945 is 5491895.

It is a happy number.

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 5981945 - 2¹⁰ = 5980921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5981947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13697 + ... + 14126.

It is an arithmetic number, because the mean of its divisors is an integer number (918192).

Almost surely, 2^5981945 is an apocalyptic number.

It is an amenable number.

5981945 is a deficient number, since it is larger than the sum of its proper divisors (1363591).

5981945 is a wasteful number, since it uses less digits than its factorization.

5981945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27871.

The product of its digits is 64800, while the sum is 41.

The square root of 5981945 is about 2445.8015046197. The cubic root of 5981945 is about 181.5296088622.

The spelling of 5981945 in words is "five million, nine hundred eighty-one thousand, nine hundred forty-five".