997055 has 4 divisors (see below), whose sum is σ = 1196472. Its totient is φ = 797640.

The previous prime is 997043. The next prime is 997057. The reversal of 997055 is 550799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550799 = 127 ⋅4337.

It is not a de Polignac number, because 997055 - 2¹⁸ = 734911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99701 + ... + 99710.

It is an arithmetic number, because the mean of its divisors is an integer number (299118).

2⁹⁹⁷⁰⁵⁵ is an apocalyptic number.

997055 is a deficient number, since it is larger than the sum of its proper divisors (199417).

997055 is a wasteful number, since it uses less digits than its factorization.

997055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199416.

The product of its (nonzero) digits is 14175, while the sum is 35.

The square root of 997055 is about 998.5264142726. The cubic root of 997055 is about 99.9017368084.

The spelling of 997055 in words is "nine hundred ninety-seven thousand, fifty-five".