158271237 has 12 divisors (see below), whose sum is σ = 234793260. Its totient is φ = 102662208.

The previous prime is 158271203. The next prime is 158271247. The reversal of 158271237 is 732172851.

158271237 is a `hidden beast` number, since 1 + 582 + 71 + 2 + 3 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99380961 + 58890276 = 9969^2 + 7674^2 .

It is not a de Polignac number, because 158271237 - 2⁷ = 158271109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158271247) 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 in 11 ways as a sum of consecutive naturals, for example, 237312 + ... + 237977.

It is an arithmetic number, because the mean of its divisors is an integer number (19566105).

Almost surely, 2^158271237 is an apocalyptic number.

It is an amenable number.

158271237 is a deficient number, since it is larger than the sum of its proper divisors (76522023).

158271237 is a wasteful number, since it uses less digits than its factorization.

158271237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475332 (or 475329 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 158271237 is about 12580.5896920613. The cubic root of 158271237 is about 540.9211951138.

The spelling of 158271237 in words is "one hundred fifty-eight million, two hundred seventy-one thousand, two hundred thirty-seven".