228079561 has 2 divisors, whose sum is σ = 228079562. Its totient is φ = 228079560.

The previous prime is 228079541. The next prime is 228079571. The reversal of 228079561 is 165970822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175430025 + 52649536 = 13245^2 + 7256^2 .

It is a cyclic number.

It is not a de Polignac number, because 228079561 - 2¹¹ = 228077513 is a prime.

It is a super-2 number, since 2×228079561² = 104040572291905442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228079541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114039780 + 114039781.

It is an arithmetic number, because the mean of its divisors is an integer number (114039781).

Almost surely, 2^228079561 is an apocalyptic number.

It is an amenable number.

228079561 is a deficient number, since it is larger than the sum of its proper divisors (1).

228079561 is an equidigital number, since it uses as much as digits as its factorization.

228079561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 228079561 is about 15102.3031687223. The cubic root of 228079561 is about 610.9825257087.

The spelling of 228079561 in words is "two hundred twenty-eight million, seventy-nine thousand, five hundred sixty-one".