158217029 has 2 divisors, whose sum is σ = 158217030. Its totient is φ = 158217028.

The previous prime is 158216983. The next prime is 158217041. The reversal of 158217029 is 920712851.

158217029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158180929 + 36100 = 12577^2 + 190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158217029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158217029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158217049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79108514 + 79108515.

It is an arithmetic number, because the mean of its divisors is an integer number (79108515).

Almost surely, 2^158217029 is an apocalyptic number.

It is an amenable number.

158217029 is a deficient number, since it is larger than the sum of its proper divisors (1).

158217029 is an equidigital number, since it uses as much as digits as its factorization.

158217029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 158217029 is about 12578.4350775444. The cubic root of 158217029 is about 540.8594327769.

The spelling of 158217029 in words is "one hundred fifty-eight million, two hundred seventeen thousand, twenty-nine".