997255 has 8 divisors (see below), whose sum is σ = 1367712. Its totient is φ = 683808.

The previous prime is 997247. The next prime is 997259. The reversal of 997255 is 552799.

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

It is a cyclic number.

It is not a de Polignac number, because 997255 - 2³ = 997247 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14212 + ... + 14281.

It is an arithmetic number, because the mean of its divisors is an integer number (170964).

2⁹⁹⁷²⁵⁵ is an apocalyptic number.

997255 is a deficient number, since it is larger than the sum of its proper divisors (370457).

997255 is a wasteful number, since it uses less digits than its factorization.

997255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28505.

The product of its digits is 28350, while the sum is 37.

The square root of 997255 is about 998.6265568269. The cubic root of 997255 is about 99.9084161496.

The spelling of 997255 in words is "nine hundred ninety-seven thousand, two hundred fifty-five".