258434261 has 4 divisors (see below), whose sum is σ = 258882732. Its totient is φ = 257985792.

The previous prime is 258434251. The next prime is 258434291. The reversal of 258434261 is 162434852.

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 215531761 + 42902500 = 14681^2 + 6550^2 .

It is a cyclic number.

It is not a de Polignac number, because 258434261 - 2¹⁰ = 258433237 is a prime.

It is a super-2 number, since 2×258434261² = 133576534517232242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258434251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223370 + ... + 224523.

It is an arithmetic number, because the mean of its divisors is an integer number (64720683).

Almost surely, 2^258434261 is an apocalyptic number.

It is an amenable number.

258434261 is a deficient number, since it is larger than the sum of its proper divisors (448471).

258434261 is an equidigital number, since it uses as much as digits as its factorization.

258434261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448470.

The product of its digits is 46080, while the sum is 35.

The square root of 258434261 is about 16075.8906751694. The cubic root of 258434261 is about 636.9666525165.

The spelling of 258434261 in words is "two hundred fifty-eight million, four hundred thirty-four thousand, two hundred sixty-one".