578083981 has 2 divisors, whose sum is σ = 578083982. Its totient is φ = 578083980.

The previous prime is 578083943. The next prime is 578083991. The reversal of 578083981 is 189380875.

578083981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514881481 + 63202500 = 22691^2 + 7950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-578083981 is a prime.

It is a super-2 number, since 2×578083981² = 668362178177616722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (578083991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289041990 + 289041991.

It is an arithmetic number, because the mean of its divisors is an integer number (289041991).

Almost surely, 2^578083981 is an apocalyptic number.

It is an amenable number.

578083981 is a deficient number, since it is larger than the sum of its proper divisors (1).

578083981 is an equidigital number, since it uses as much as digits as its factorization.

578083981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 578083981 is about 24043.3770714515. The cubic root of 578083981 is about 833.0357601885.

The spelling of 578083981 in words is "five hundred seventy-eight million, eighty-three thousand, nine hundred eighty-one".