997153 has 2 divisors, whose sum is σ = 997154. Its totient is φ = 997152.

The previous prime is 997151. The next prime is 997163. The reversal of 997153 is 351799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565504 + 431649 = 752^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 997153 - 2¹ = 997151 is a prime.

Together with 997151, it forms a pair of twin primes.

997153 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (997151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498576 + 498577.

It is an arithmetic number, because the mean of its divisors is an integer number (498577).

2⁹⁹⁷¹⁵³ is an apocalyptic number.

It is an amenable number.

997153 is a deficient number, since it is larger than the sum of its proper divisors (1).

997153 is an equidigital number, since it uses as much as digits as its factorization.

997153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8505, while the sum is 34.

The square root of 997153 is about 998.5754853790. The cubic root of 997153 is about 99.9050097972.

The spelling of 997153 in words is "nine hundred ninety-seven thousand, one hundred fifty-three".