258326251 has 4 divisors (see below), whose sum is σ = 258390000. Its totient is φ = 258262504.

The previous prime is 258326239. The next prime is 258326291. The reversal of 258326251 is 152623852.

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 258326251 - 2⁵ = 258326219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258326221) 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, 25351 + ... + 34048.

It is an arithmetic number, because the mean of its divisors is an integer number (64597500).

Almost surely, 2^258326251 is an apocalyptic number.

258326251 is a deficient number, since it is larger than the sum of its proper divisors (63749).

258326251 is an equidigital number, since it uses as much as digits as its factorization.

258326251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63748.

The product of its digits is 28800, while the sum is 34.

The square root of 258326251 is about 16072.5309456849. The cubic root of 258326251 is about 636.8779022160.

The spelling of 258326251 in words is "two hundred fifty-eight million, three hundred twenty-six thousand, two hundred fifty-one".