29802161 has 2 divisors, whose sum is σ = 29802162. Its totient is φ = 29802160.

The previous prime is 29802151. The next prime is 29802167. The reversal of 29802161 is 16120892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29767936 + 34225 = 5456^2 + 185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29802161 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (29802167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14901080 + 14901081.

It is an arithmetic number, because the mean of its divisors is an integer number (14901081).

Almost surely, 2^29802161 is an apocalyptic number.

It is an amenable number.

29802161 is a deficient number, since it is larger than the sum of its proper divisors (1).

29802161 is an equidigital number, since it uses as much as digits as its factorization.

29802161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 29802161 is about 5459.1355542796. The cubic root of 29802161 is about 310.0387083125.

The spelling of 29802161 in words is "twenty-nine million, eight hundred two thousand, one hundred sixty-one".