258872281 has 2 divisors, whose sum is σ = 258872282. Its totient is φ = 258872280.

The previous prime is 258872249. The next prime is 258872293. The reversal of 258872281 is 182278852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238980681 + 19891600 = 15459^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 258872281 - 2⁵ = 258872249 is a prime.

It is a super-2 number, since 2×258872281² = 134029715740285922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (258872221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129436140 + 129436141.

It is an arithmetic number, because the mean of its divisors is an integer number (129436141).

Almost surely, 2^258872281 is an apocalyptic number.

It is an amenable number.

258872281 is a deficient number, since it is larger than the sum of its proper divisors (1).

258872281 is an equidigital number, since it uses as much as digits as its factorization.

258872281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 143360, while the sum is 43.

The square root of 258872281 is about 16089.5084138702. The cubic root of 258872281 is about 637.3263141346.

The spelling of 258872281 in words is "two hundred fifty-eight million, eight hundred seventy-two thousand, two hundred eighty-one".