288021161 has 2 divisors, whose sum is σ = 288021162. Its totient is φ = 288021160.

The previous prime is 288021131. The next prime is 288021169. The reversal of 288021161 is 161120882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280897600 + 7123561 = 16760^2 + 2669^2 .

It is a cyclic number.

It is not a de Polignac number, because 288021161 - 2¹⁴ = 288004777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (288021169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144010580 + 144010581.

It is an arithmetic number, because the mean of its divisors is an integer number (144010581).

Almost surely, 2^288021161 is an apocalyptic number.

It is an amenable number.

288021161 is a deficient number, since it is larger than the sum of its proper divisors (1).

288021161 is an equidigital number, since it uses as much as digits as its factorization.

288021161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 288021161 is about 16971.1861989668. The cubic root of 288021161 is about 660.4016234760.

The spelling of 288021161 in words is "two hundred eighty-eight million, twenty-one thousand, one hundred sixty-one".