258751087 has 4 divisors (see below), whose sum is σ = 295715536. Its totient is φ = 221786640.

The previous prime is 258751061. The next prime is 258751099. The reversal of 258751087 is 780157852.

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 258751087 - 2¹⁹ = 258226799 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 (258751007) 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, 18482214 + ... + 18482227.

It is an arithmetic number, because the mean of its divisors is an integer number (73928884).

Almost surely, 2^258751087 is an apocalyptic number.

258751087 is a deficient number, since it is larger than the sum of its proper divisors (36964449).

258751087 is an equidigital number, since it uses as much as digits as its factorization.

258751087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36964448.

The product of its (nonzero) digits is 156800, while the sum is 43.

The square root of 258751087 is about 16085.7417298675. The cubic root of 258751087 is about 637.2268414245.

It can be divided in two parts, 25875 and 1087, that added together give a palindrome (26962).

The spelling of 258751087 in words is "two hundred fifty-eight million, seven hundred fifty-one thousand, eighty-seven".