997549056 has 297 divisors, whose sum is σ = 3423478539. Its totient is φ = 278949888.

The previous prime is 997549051. The next prime is 997549057. The reversal of 997549056 is 650945799.

The square root of 997549056 is 31584.

It is a perfect power (a square), and thus also a powerful number.

997549056 is a `hidden beast` number, since 9 + 97 + 549 + 0 + 5 + 6 = 666.

It is a super-2 number, since 2×997549056² = 1990208238252982272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 997548993 and 997549011.

It is not an unprimeable number, because it can be changed into a prime (997549051) 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 26 ways as a sum of consecutive naturals, for example, 21224425 + ... + 21224471.

Almost surely, 2^997549056 is an apocalyptic number.

997549056 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

997549056 is the 31584-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997549056

997549056 is an abundant number, since it is smaller than the sum of its proper divisors (2425929483).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997549056 is a wasteful number, since it uses less digits than its factorization.

997549056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 54.

The cubic root of 997549056 is about 999.1823502978.

The spelling of 997549056 in words is "nine hundred ninety-seven million, five hundred forty-nine thousand, fifty-six".