997453 has 2 divisors, whose sum is σ = 997454. Its totient is φ = 997452.

The previous prime is 997439. The next prime is 997463. The reversal of 997453 is 354799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669124 + 328329 = 818^2 + 573^2 .

It is an emirp because it is prime and its reverse (354799) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997433) 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, 498726 + 498727.

It is an arithmetic number, because the mean of its divisors is an integer number (498727).

2⁹⁹⁷⁴⁵³ is an apocalyptic number.

It is an amenable number.

997453 is a deficient number, since it is larger than the sum of its proper divisors (1).

997453 is an equidigital number, since it uses as much as digits as its factorization.

997453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 997453 is about 998.7256880645. The cubic root of 997453 is about 99.9150278177.

The spelling of 997453 in words is "nine hundred ninety-seven thousand, four hundred fifty-three".