553945320 has 96 divisors (see below), whose sum is σ = 1822111200. Its totient is φ = 145931136.

The previous prime is 553945297. The next prime is 553945321. The reversal of 553945320 is 23549355.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (553945321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20611 + ... + 39149.

It is an arithmetic number, because the mean of its divisors is an integer number (18980325).

Almost surely, 2^553945320 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 553945320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911055600).

553945320 is an abundant number, since it is smaller than the sum of its proper divisors (1268165880).

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

553945320 is a wasteful number, since it uses less digits than its factorization.

553945320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18639 (or 18632 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 553945320 is about 23536.0429979213. The cubic root of 553945320 is about 821.2756863869.

The spelling of 553945320 in words is "five hundred fifty-three million, nine hundred forty-five thousand, three hundred twenty".