258503217 has 16 divisors (see below), whose sum is σ = 396920832. Its totient is φ = 146586960.

The previous prime is 258503191. The next prime is 258503221. The reversal of 258503217 is 712305852.

258503217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 258503217 - 2¹⁰ = 258502193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258503617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44233 + ... + 49734.

It is an arithmetic number, because the mean of its divisors is an integer number (24807552).

Almost surely, 2^258503217 is an apocalyptic number.

It is an amenable number.

258503217 is a deficient number, since it is larger than the sum of its proper divisors (138417615).

258503217 is a wasteful number, since it uses less digits than its factorization.

258503217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94108.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 258503217 is about 16078.0352344433. The cubic root of 258503217 is about 637.0232997613.

The spelling of 258503217 in words is "two hundred fifty-eight million, five hundred three thousand, two hundred seventeen".