258455851 has 2 divisors, whose sum is σ = 258455852. Its totient is φ = 258455850.

The previous prime is 258455849. The next prime is 258455863. The reversal of 258455851 is 158554852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258455851 - 2¹ = 258455849 is a prime.

It is a super-2 number, since 2×258455851² = 133598853832268402, which contains 22 as substring.

Together with 258455849, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 258455798 and 258455807.

It is not a weakly prime, because it can be changed into another prime (258455831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129227925 + 129227926.

It is an arithmetic number, because the mean of its divisors is an integer number (129227926).

Almost surely, 2^258455851 is an apocalyptic number.

258455851 is a deficient number, since it is larger than the sum of its proper divisors (1).

258455851 is an equidigital number, since it uses as much as digits as its factorization.

258455851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320000, while the sum is 43.

The square root of 258455851 is about 16076.5621635970. The cubic root of 258455851 is about 636.9843897508.

Subtracting from 258455851 its reverse (158554852), we obtain a palindrome (99900999).

The spelling of 258455851 in words is "two hundred fifty-eight million, four hundred fifty-five thousand, eight hundred fifty-one".