855453881 has 4 divisors (see below), whose sum is σ = 892647552. Its totient is φ = 818260212.

The previous prime is 855453871. The next prime is 855453883. The reversal of 855453881 is 188354558.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855453881 is a prime.

It is a super-2 number, since 2×855453881² = 1463602685035924322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855453883) 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, 18596801 + ... + 18596846.

It is an arithmetic number, because the mean of its divisors is an integer number (223161888).

Almost surely, 2^855453881 is an apocalyptic number.

It is an amenable number.

855453881 is a deficient number, since it is larger than the sum of its proper divisors (37193671).

855453881 is a wasteful number, since it uses less digits than its factorization.

855453881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37193670.

The product of its digits is 768000, while the sum is 47.

The square root of 855453881 is about 29248.1432060225. The cubic root of 855453881 is about 949.2899148027.

The spelling of 855453881 in words is "eight hundred fifty-five million, four hundred fifty-three thousand, eight hundred eighty-one".