997485171 has 8 divisors (see below), whose sum is σ = 1372882944. Its totient is φ = 643538760.

The previous prime is 997485169. The next prime is 997485193. The reversal of 997485171 is 171584799.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997485171 - 2¹ = 997485169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997485121) 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, 5362731 + ... + 5362916.

It is an arithmetic number, because the mean of its divisors is an integer number (171610368).

Almost surely, 2^997485171 is an apocalyptic number.

997485171 is a deficient number, since it is larger than the sum of its proper divisors (375397773).

997485171 is a wasteful number, since it uses less digits than its factorization.

997485171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10725681.

The product of its digits is 635040, while the sum is 51.

The square root of 997485171 is about 31582.9886331234. The cubic root of 997485171 is about 999.1610199760.

The spelling of 997485171 in words is "nine hundred ninety-seven million, four hundred eighty-five thousand, one hundred seventy-one".