553322440 has 64 divisors (see below), whose sum is σ = 1371712320. Its totient is φ = 199200000.

The previous prime is 553322423. The next prime is 553322447. The reversal of 553322440 is 44223355.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 553322399 and 553322408.

It is not an unprimeable number, because it can be changed into a prime (553322447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38215 + ... + 50665.

It is an arithmetic number, because the mean of its divisors is an integer number (21433005).

Almost surely, 2^553322440 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 553322440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685856160).

553322440 is an abundant number, since it is smaller than the sum of its proper divisors (818389880).

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

553322440 is a wasteful number, since it uses less digits than its factorization.

553322440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12574 (or 12570 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 553322440 is about 23522.8068053113. The cubic root of 553322440 is about 820.9677450074.

Adding to 553322440 its reverse (44223355), we get a palindrome (597545795).

The spelling of 553322440 in words is "five hundred fifty-three million, three hundred twenty-two thousand, four hundred forty".