855454871 has 2 divisors, whose sum is σ = 855454872. Its totient is φ = 855454870.

The previous prime is 855454867. The next prime is 855454877. The reversal of 855454871 is 178454558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855454871 - 2² = 855454867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855454877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427727435 + 427727436.

It is an arithmetic number, because the mean of its divisors is an integer number (427727436).

Almost surely, 2^855454871 is an apocalyptic number.

855454871 is a deficient number, since it is larger than the sum of its proper divisors (1).

855454871 is an equidigital number, since it uses as much as digits as its factorization.

855454871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896000, while the sum is 47.

The square root of 855454871 is about 29248.1601301689. The cubic root of 855454871 is about 949.2902810007.

The spelling of 855454871 in words is "eight hundred fifty-five million, four hundred fifty-four thousand, eight hundred seventy-one".