258442573 has 2 divisors, whose sum is σ = 258442574. Its totient is φ = 258442572.

The previous prime is 258442549. The next prime is 258442603. The reversal of 258442573 is 375244852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182439049 + 76003524 = 13507^2 + 8718^2 .

It is a cyclic number.

It is not a de Polignac number, because 258442573 - 2⁹ = 258442061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258442073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129221286 + 129221287.

It is an arithmetic number, because the mean of its divisors is an integer number (129221287).

Almost surely, 2^258442573 is an apocalyptic number.

It is an amenable number.

258442573 is a deficient number, since it is larger than the sum of its proper divisors (1).

258442573 is an equidigital number, since it uses as much as digits as its factorization.

258442573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 40.

The square root of 258442573 is about 16076.1491968693. The cubic root of 258442573 is about 636.9734813454.

The spelling of 258442573 in words is "two hundred fifty-eight million, four hundred forty-two thousand, five hundred seventy-three".