258215113 has 4 divisors (see below), whose sum is σ = 278077828. Its totient is φ = 238352400.

The previous prime is 258215107. The next prime is 258215131. The reversal of 258215113 is 311512852.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12446784 + 245768329 = 3528^2 + 15677^2 .

It is not a de Polignac number, because 258215113 - 2⁵ = 258215081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258215183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9931338 + ... + 9931363.

It is an arithmetic number, because the mean of its divisors is an integer number (69519457).

Almost surely, 2^258215113 is an apocalyptic number.

It is an amenable number.

258215113 is a deficient number, since it is larger than the sum of its proper divisors (19862715).

258215113 is a wasteful number, since it uses less digits than its factorization.

258215113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19862714.

The product of its digits is 2400, while the sum is 28.

The square root of 258215113 is about 16069.0731842257. The cubic root of 258215113 is about 636.7865558545.

Adding to 258215113 its reverse (311512852), we get a palindrome (569727965).

The spelling of 258215113 in words is "two hundred fifty-eight million, two hundred fifteen thousand, one hundred thirteen".