553160221 has 4 divisors (see below), whose sum is σ = 553232700. Its totient is φ = 553087744.

The previous prime is 553160191. The next prime is 553160227. The reversal of 553160221 is 122061355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84437721 + 468722500 = 9189^2 + 21650^2 .

It is a cyclic number.

It is not a de Polignac number, because 553160221 - 2⁹ = 553159709 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 (553160227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23236 + ... + 40573.

It is an arithmetic number, because the mean of its divisors is an integer number (138308175).

Almost surely, 2^553160221 is an apocalyptic number.

It is an amenable number.

553160221 is a deficient number, since it is larger than the sum of its proper divisors (72479).

553160221 is an equidigital number, since it uses as much as digits as its factorization.

553160221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72478.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 553160221 is about 23519.3584308756. The cubic root of 553160221 is about 820.8875087390.

The spelling of 553160221 in words is "five hundred fifty-three million, one hundred sixty thousand, two hundred twenty-one".