5981531 has 8 divisors (see below), whose sum is σ = 6294624. Its totient is φ = 5676480.

The previous prime is 5981491. The next prime is 5981533. The reversal of 5981531 is 1351895.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5981531 is a prime.

It is a super-2 number, since 2×5981531² = 71557426207922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5981533) by changing a digit.

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, 455 + ... + 3488.

It is an arithmetic number, because the mean of its divisors is an integer number (786828).

Almost surely, 2^5981531 is an apocalyptic number.

5981531 is a deficient number, since it is larger than the sum of its proper divisors (313093).

5981531 is a wasteful number, since it uses less digits than its factorization.

5981531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021.

The product of its digits is 5400, while the sum is 32.

The square root of 5981531 is about 2445.7168683231. The cubic root of 5981531 is about 181.5254209828.

The spelling of 5981531 in words is "five million, nine hundred eighty-one thousand, five hundred thirty-one".