971081055 has 80 divisors (see below), whose sum is σ = 2106561600. Its totient is φ = 417788928.

The previous prime is 971081039. The next prime is 971081081. The reversal of 971081055 is 550180179.

It is not a de Polignac number, because 971081055 - 2⁴ = 971081039 is a prime.

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 38121 + ... + 58269.

It is an arithmetic number, because the mean of its divisors is an integer number (26332020).

Almost surely, 2^971081055 is an apocalyptic number.

971081055 is an abundant number, since it is smaller than the sum of its proper divisors (1135480545).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971081055 is a wasteful number, since it uses less digits than its factorization.

971081055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20190 (or 20181 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 971081055 is about 31162.1734639932. The cubic root of 971081055 is about 990.2659065345.

The spelling of 971081055 in words is "nine hundred seventy-one million, eighty-one thousand, fifty-five".