553321648 has 80 divisors (see below), whose sum is σ = 1237242240. Its totient is φ = 237081600.

The previous prime is 553321631. The next prime is 553321669. The reversal of 553321648 is 846123355.

It is a super-2 number, since 2×553321648² = 612329692290871808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126683 + ... + 1127173.

It is an arithmetic number, because the mean of its divisors is an integer number (15465528).

Almost surely, 2^553321648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 553321648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618621120).

553321648 is an abundant number, since it is smaller than the sum of its proper divisors (683920592).

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

553321648 is a wasteful number, since it uses less digits than its factorization.

553321648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 860 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 553321648 is about 23522.7899705796. The cubic root of 553321648 is about 820.9673533089.

The spelling of 553321648 in words is "five hundred fifty-three million, three hundred twenty-one thousand, six hundred forty-eight".