228205553 has 4 divisors (see below), whose sum is σ = 236074740. Its totient is φ = 220336368.

The previous prime is 228205547. The next prime is 228205583. The reversal of 228205553 is 355502822.

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 36881329 + 191324224 = 6073^2 + 13832^2 .

It is a cyclic number.

It is not a de Polignac number, because 228205553 - 2²⁰ = 227156977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228205543) 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, 3934550 + ... + 3934607.

It is an arithmetic number, because the mean of its divisors is an integer number (59018685).

Almost surely, 2^228205553 is an apocalyptic number.

It is an amenable number.

228205553 is a deficient number, since it is larger than the sum of its proper divisors (7869187).

228205553 is an equidigital number, since it uses as much as digits as its factorization.

228205553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7869186.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 228205553 is about 15106.4738771164. The cubic root of 228205553 is about 611.0950080079.

The spelling of 228205553 in words is "two hundred twenty-eight million, two hundred five thousand, five hundred fifty-three".