258080981 has 2 divisors, whose sum is σ = 258080982. Its totient is φ = 258080980.

The previous prime is 258080941. The next prime is 258080989. The reversal of 258080981 is 189080852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142324900 + 115756081 = 11930^2 + 10759^2 .

It is a cyclic number.

It is not a de Polignac number, because 258080981 - 2¹⁸ = 257818837 is a prime.

It is a super-2 number, since 2×258080981² = 133211585507844722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen 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 (258080989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129040490 + 129040491.

It is an arithmetic number, because the mean of its divisors is an integer number (129040491).

Almost surely, 2^258080981 is an apocalyptic number.

It is an amenable number.

258080981 is a deficient number, since it is larger than the sum of its proper divisors (1).

258080981 is an equidigital number, since it uses as much as digits as its factorization.

258080981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 258080981 is about 16064.8990348524. The cubic root of 258080981 is about 636.6762753896.

The spelling of 258080981 in words is "two hundred fifty-eight million, eighty thousand, nine hundred eighty-one".