258508423 has 4 divisors (see below), whose sum is σ = 262746328. Its totient is φ = 254270520.

The previous prime is 258508391. The next prime is 258508463. The reversal of 258508423 is 324805852.

258508423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 258508423 - 2⁵ = 258508391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258508463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118861 + ... + 2118982.

It is an arithmetic number, because the mean of its divisors is an integer number (65686582).

Almost surely, 2^258508423 is an apocalyptic number.

258508423 is a deficient number, since it is larger than the sum of its proper divisors (4237905).

258508423 is an equidigital number, since it uses as much as digits as its factorization.

258508423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237904.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 258508423 is about 16078.1971315194. The cubic root of 258508423 is about 637.0275760731.

The spelling of 258508423 in words is "two hundred fifty-eight million, five hundred eight thousand, four hundred twenty-three".