228551013 has 6 divisors (see below), whose sum is σ = 330129254. Its totient is φ = 152367336.

The previous prime is 228550997. The next prime is 228551017. The reversal of 228551013 is 310155822.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 223741764 + 4809249 = 14958^2 + 2193^2 .

It is not a de Polignac number, because 228551013 - 2⁴ = 228550997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228551017) 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 5 ways as a sum of consecutive naturals, for example, 12697270 + ... + 12697287.

Almost surely, 2^228551013 is an apocalyptic number.

It is an amenable number.

228551013 is a deficient number, since it is larger than the sum of its proper divisors (101578241).

228551013 is a wasteful number, since it uses less digits than its factorization.

228551013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25394563 (or 25394560 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 228551013 is about 15117.9037237310. The cubic root of 228551013 is about 611.4032132522.

The spelling of 228551013 in words is "two hundred twenty-eight million, five hundred fifty-one thousand, thirteen".