228217573 has 2 divisors, whose sum is σ = 228217574. Its totient is φ = 228217572.

The previous prime is 228217529. The next prime is 228217579. The reversal of 228217573 is 375712822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228100609 + 116964 = 15103^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 228217573 - 2²¹ = 226120421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228217579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114108786 + 114108787.

It is an arithmetic number, because the mean of its divisors is an integer number (114108787).

Almost surely, 2^228217573 is an apocalyptic number.

It is an amenable number.

228217573 is a deficient number, since it is larger than the sum of its proper divisors (1).

228217573 is an equidigital number, since it uses as much as digits as its factorization.

228217573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 228217573 is about 15106.8717145543. The cubic root of 228217573 is about 611.1057369800.

The spelling of 228217573 in words is "two hundred twenty-eight million, two hundred seventeen thousand, five hundred seventy-three".