228808551 has 16 divisors (see below), whose sum is σ = 319628288. Its totient is φ = 145411200.

The previous prime is 228808529. The next prime is 228808553. The reversal of 228808551 is 155808822.

It is not a de Polignac number, because 228808551 - 2¹¹ = 228806503 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228808553) 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 15 ways as a sum of consecutive naturals, for example, 12130 + ... + 24591.

It is an arithmetic number, because the mean of its divisors is an integer number (19976768).

Almost surely, 2^228808551 is an apocalyptic number.

228808551 is a deficient number, since it is larger than the sum of its proper divisors (90819737).

228808551 is a wasteful number, since it uses less digits than its factorization.

228808551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36822.

The product of its (nonzero) digits is 51200, while the sum is 39.

The square root of 228808551 is about 15126.4189747607. The cubic root of 228808551 is about 611.6327760857.

The spelling of 228808551 in words is "two hundred twenty-eight million, eight hundred eight thousand, five hundred fifty-one".