552443100221 has 16 divisors (see below), whose sum is σ = 582732893568. Its totient is φ = 522681984000.

The previous prime is 552443100197. The next prime is 552443100247. The reversal of 552443100221 is 122001344255.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-552443100221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552443100271) 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, 3949286 + ... + 4086776.

It is an arithmetic number, because the mean of its divisors is an integer number (36420805848).

Almost surely, 2^552443100221 is an apocalyptic number.

It is an amenable number.

552443100221 is a deficient number, since it is larger than the sum of its proper divisors (30289793347).

552443100221 is a wasteful number, since it uses less digits than its factorization.

552443100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139412.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 552443100221 its reverse (122001344255), we get a palindrome (674444444476).

The spelling of 552443100221 in words is "five hundred fifty-two billion, four hundred forty-three million, one hundred thousand, two hundred twenty-one".