258051491 has 2 divisors, whose sum is σ = 258051492. Its totient is φ = 258051490.

The previous prime is 258051481. The next prime is 258051503. The reversal of 258051491 is 194150852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258051491 - 2¹⁰ = 258050467 is a prime.

It is not a weakly prime, because it can be changed into another prime (258051481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129025745 + 129025746.

It is an arithmetic number, because the mean of its divisors is an integer number (129025746).

Almost surely, 2^258051491 is an apocalyptic number.

258051491 is a deficient number, since it is larger than the sum of its proper divisors (1).

258051491 is an equidigital number, since it uses as much as digits as its factorization.

258051491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 258051491 is about 16063.9811690627. The cubic root of 258051491 is about 636.6520242179.

The spelling of 258051491 in words is "two hundred fifty-eight million, fifty-one thousand, four hundred ninety-one".