5897981 has 2 divisors, whose sum is σ = 5897982. Its totient is φ = 5897980.

The previous prime is 5897977. The next prime is 5897989. The reversal of 5897981 is 1897985.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5359225 + 538756 = 2315^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 5897981 - 2² = 5897977 is a prime.

It is a super-2 number, since 2×5897981² = 69572359752722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5897989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2948990 + 2948991.

It is an arithmetic number, because the mean of its divisors is an integer number (2948991).

Almost surely, 2^5897981 is an apocalyptic number.

It is an amenable number.

5897981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5897981 is an equidigital number, since it uses as much as digits as its factorization.

5897981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 47.

The square root of 5897981 is about 2428.5759201639. The cubic root of 5897981 is about 180.6762728848.

The spelling of 5897981 in words is "five million, eight hundred ninety-seven thousand, nine hundred eighty-one".