258487 has 2 divisors, whose sum is σ = 258488. Its totient is φ = 258486.

The previous prime is 258469. The next prime is 258491. The reversal of 258487 is 784852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258407) 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, 129243 + 129244.

It is an arithmetic number, because the mean of its divisors is an integer number (129244).

2²⁵⁸⁴⁸⁷ is an apocalyptic number.

258487 is a deficient number, since it is larger than the sum of its proper divisors (1).

258487 is an equidigital number, since it uses as much as digits as its factorization.

258487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 34.

The square root of 258487 is about 508.4161681143. The cubic root of 258487 is about 63.7009978428.

The spelling of 258487 in words is "two hundred fifty-eight thousand, four hundred eighty-seven".