228582161 has 2 divisors, whose sum is σ = 228582162. Its totient is φ = 228582160.

The previous prime is 228582131. The next prime is 228582169. The reversal of 228582161 is 161285822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115691536 + 112890625 = 10756^2 + 10625^2 .

It is a cyclic number.

It is not a de Polignac number, because 228582161 - 2⁶ = 228582097 is a prime.

It is not a weakly prime, because it can be changed into another prime (228582169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114291080 + 114291081.

It is an arithmetic number, because the mean of its divisors is an integer number (114291081).

Almost surely, 2^228582161 is an apocalyptic number.

It is an amenable number.

228582161 is a deficient number, since it is larger than the sum of its proper divisors (1).

228582161 is an equidigital number, since it uses as much as digits as its factorization.

228582161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 35.

The square root of 228582161 is about 15118.9338579147. The cubic root of 228582161 is about 611.4309869528.

The spelling of 228582161 in words is "two hundred twenty-eight million, five hundred eighty-two thousand, one hundred sixty-one".