855242558 has 16 divisors (see below), whose sum is σ = 1303257120. Its totient is φ = 420876000.

The previous prime is 855242551. The next prime is 855242623.

855242558 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855242551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19928 + ... + 45908.

It is an arithmetic number, because the mean of its divisors is an integer number (81453570).

Almost surely, 2^855242558 is an apocalyptic number.

855242558 is a deficient number, since it is larger than the sum of its proper divisors (448014562).

855242558 is a wasteful number, since it uses less digits than its factorization.

855242558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26243.

The product of its digits is 640000, while the sum is 44.

The square root of 855242558 is about 29244.5303945883. The cubic root of 855242558 is about 949.2117405850.

The spelling of 855242558 in words is "eight hundred fifty-five million, two hundred forty-two thousand, five hundred fifty-eight".