158271601 has 2 divisors, whose sum is σ = 158271602. Its totient is φ = 158271600.

The previous prime is 158271587. The next prime is 158271623. The reversal of 158271601 is 106172851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114062400 + 44209201 = 10680^2 + 6649^2 .

It is a cyclic number.

It is not a de Polignac number, because 158271601 - 2¹³ = 158263409 is a prime.

It is not a weakly prime, because it can be changed into another prime (158271101) 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, 79135800 + 79135801.

It is an arithmetic number, because the mean of its divisors is an integer number (79135801).

Almost surely, 2^158271601 is an apocalyptic number.

It is an amenable number.

158271601 is a deficient number, since it is larger than the sum of its proper divisors (1).

158271601 is an equidigital number, since it uses as much as digits as its factorization.

158271601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 158271601 is about 12580.6041587835. The cubic root of 158271601 is about 540.9216097926.

The spelling of 158271601 in words is "one hundred fifty-eight million, two hundred seventy-one thousand, six hundred one".