29805157 has 2 divisors, whose sum is σ = 29805158. Its totient is φ = 29805156.

The previous prime is 29805119. The next prime is 29805163. The reversal of 29805157 is 75150892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27029601 + 2775556 = 5199^2 + 1666^2 .

It is a cyclic number.

It is not a de Polignac number, because 29805157 - 2¹⁹ = 29280869 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 (29805197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14902578 + 14902579.

It is an arithmetic number, because the mean of its divisors is an integer number (14902579).

Almost surely, 2^29805157 is an apocalyptic number.

It is an amenable number.

29805157 is a deficient number, since it is larger than the sum of its proper divisors (1).

29805157 is an equidigital number, since it uses as much as digits as its factorization.

29805157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 29805157 is about 5459.4099498023. The cubic root of 29805157 is about 310.0490973225.

The spelling of 29805157 in words is "twenty-nine million, eight hundred five thousand, one hundred fifty-seven".