228538553 has 4 divisors (see below), whose sum is σ = 228993408. Its totient is φ = 228083700.

The previous prime is 228538549. The next prime is 228538559. The reversal of 228538553 is 355835822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228538553 - 2² = 228538549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228538553.

It is not an unprimeable number, because it can be changed into a prime (228538559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226673 + ... + 227678.

It is an arithmetic number, because the mean of its divisors is an integer number (57248352).

Almost surely, 2^228538553 is an apocalyptic number.

It is an amenable number.

228538553 is a deficient number, since it is larger than the sum of its proper divisors (454855).

228538553 is an equidigital number, since it uses as much as digits as its factorization.

228538553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454854.

The product of its digits is 288000, while the sum is 41.

The square root of 228538553 is about 15117.4916239434. The cubic root of 228538553 is about 611.3921023520.

The spelling of 228538553 in words is "two hundred twenty-eight million, five hundred thirty-eight thousand, five hundred fifty-three".