29288261 has 2 divisors, whose sum is σ = 29288262. Its totient is φ = 29288260.

The previous prime is 29288239. The next prime is 29288267. The reversal of 29288261 is 16288292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27772900 + 1515361 = 5270^2 + 1231^2 .

It is a cyclic number.

It is not a de Polignac number, because 29288261 - 2¹⁸ = 29026117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29288267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14644130 + 14644131.

It is an arithmetic number, because the mean of its divisors is an integer number (14644131).

Almost surely, 2^29288261 is an apocalyptic number.

It is an amenable number.

29288261 is a deficient number, since it is larger than the sum of its proper divisors (1).

29288261 is an equidigital number, since it uses as much as digits as its factorization.

29288261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 29288261 is about 5411.8629879183. The cubic root of 29288261 is about 308.2462927107.

The spelling of 29288261 in words is "twenty-nine million, two hundred eighty-eight thousand, two hundred sixty-one".