5981813 has 2 divisors, whose sum is σ = 5981814. Its totient is φ = 5981812.

The previous prime is 5981797. The next prime is 5981819. The reversal of 5981813 is 3181895.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3928324 + 2053489 = 1982^2 + 1433^2 .

It is a cyclic number.

It is not a de Polignac number, because 5981813 - 2⁴ = 5981797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5981819) 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 as a sum of consecutive naturals, namely, 2990906 + 2990907.

It is an arithmetic number, because the mean of its divisors is an integer number (2990907).

Almost surely, 2^5981813 is an apocalyptic number.

It is an amenable number.

5981813 is a deficient number, since it is larger than the sum of its proper divisors (1).

5981813 is an equidigital number, since it uses as much as digits as its factorization.

5981813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 35.

The square root of 5981813 is about 2445.7745194519. The cubic root of 5981813 is about 181.5282736173.

The spelling of 5981813 in words is "five million, nine hundred eighty-one thousand, eight hundred thirteen".