997559452 has 12 divisors (see below), whose sum is σ = 1748224296. Its totient is φ = 498066800.

The previous prime is 997559419. The next prime is 997559467. The reversal of 997559452 is 254955799.

It is a junction number, because it is equal to n+sod(n) for n = 997559393 and 997559402.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 175078 + ... + 180685.

It is an arithmetic number, because the mean of its divisors is an integer number (145685358).

Almost surely, 2^997559452 is an apocalyptic number.

It is an amenable number.

997559452 is a deficient number, since it is larger than the sum of its proper divisors (750664844).

997559452 is a wasteful number, since it uses less digits than its factorization.

997559452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356468 (or 356466 counting only the distinct ones).

The product of its digits is 5103000, while the sum is 55.

The square root of 997559452 is about 31584.1645765722. The cubic root of 997559452 is about 999.1858212929.

The spelling of 997559452 in words is "nine hundred ninety-seven million, five hundred fifty-nine thousand, four hundred fifty-two".