158947601 has 2 divisors, whose sum is σ = 158947602. Its totient is φ = 158947600.

The previous prime is 158947589. The next prime is 158947619. The reversal of 158947601 is 106749851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139806976 + 19140625 = 11824^2 + 4375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158947601 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 (158947631) 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, 79473800 + 79473801.

It is an arithmetic number, because the mean of its divisors is an integer number (79473801).

Almost surely, 2^158947601 is an apocalyptic number.

It is an amenable number.

158947601 is a deficient number, since it is larger than the sum of its proper divisors (1).

158947601 is an equidigital number, since it uses as much as digits as its factorization.

158947601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 158947601 is about 12607.4422862054. The cubic root of 158947601 is about 541.6906330803.

The spelling of 158947601 in words is "one hundred fifty-eight million, nine hundred forty-seven thousand, six hundred one".