228161061 has 12 divisors (see below), whose sum is σ = 330401292. Its totient is φ = 151721856.

The previous prime is 228161051. The next prime is 228161071. The reversal of 228161061 is 160161822.

It is an interprime number because it is at equal distance from previous prime (228161051) and next prime (228161071).

It can be written as a sum of positive squares in 2 ways, for example, as 152992161 + 75168900 = 12369^2 + 8670^2 .

It is not a de Polignac number, because 228161061 - 2⁹ = 228160549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228161051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28356 + ... + 35501.

It is an arithmetic number, because the mean of its divisors is an integer number (27533441).

Almost surely, 2^228161061 is an apocalyptic number.

It is an amenable number.

228161061 is a deficient number, since it is larger than the sum of its proper divisors (102240231).

228161061 is a wasteful number, since it uses less digits than its factorization.

228161061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64260 (or 64257 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 228161061 is about 15105.0011916583. The cubic root of 228161061 is about 611.0552914660.

The spelling of 228161061 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, sixty-one".