997464553 has 2 divisors, whose sum is σ = 997464554. Its totient is φ = 997464552.

The previous prime is 997464521. The next prime is 997464581. The reversal of 997464553 is 355464799.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701349289 + 296115264 = 26483^2 + 17208^2 .

It is a cyclic number.

It is not a de Polignac number, because 997464553 - 2⁵ = 997464521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997464553.

It is not a weakly prime, because it can be changed into another prime (997464053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498732276 + 498732277.

It is an arithmetic number, because the mean of its divisors is an integer number (498732277).

Almost surely, 2^997464553 is an apocalyptic number.

It is an amenable number.

997464553 is a deficient number, since it is larger than the sum of its proper divisors (1).

997464553 is an equidigital number, since it uses as much as digits as its factorization.

997464553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 52.

The square root of 997464553 is about 31582.6622215417. The cubic root of 997464553 is about 999.1541357153.

The spelling of 997464553 in words is "nine hundred ninety-seven million, four hundred sixty-four thousand, five hundred fifty-three".