553200021 has 36 divisors (see below), whose sum is σ = 887537196. Its totient is φ = 331752960.

The previous prime is 553200013. The next prime is 553200041. The reversal of 553200021 is 120002355.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 370139121 + 183060900 = 19239^2 + 13530^2 .

It is not a de Polignac number, because 553200021 - 2³ = 553200013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 553199967 and 553200003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553200041) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 103015 + ... + 108251.

It is an arithmetic number, because the mean of its divisors is an integer number (24653811).

Almost surely, 2^553200021 is an apocalyptic number.

It is an amenable number.

553200021 is a deficient number, since it is larger than the sum of its proper divisors (334337175).

553200021 is a wasteful number, since it uses less digits than its factorization.

553200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362 (or 5348 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 553200021 is about 23520.2045271720. The cubic root of 553200021 is about 820.9071959460.

Adding to 553200021 its reverse (120002355), we get a palindrome (673202376).

The spelling of 553200021 in words is "five hundred fifty-three million, two hundred thousand, twenty-one".