158297397 has 8 divisors (see below), whose sum is σ = 212243040. Its totient is φ = 104941680.

The previous prime is 158297393. The next prime is 158297407. The reversal of 158297397 is 793792851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158297397 - 2² = 158297393 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158297393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146854 + ... + 147927.

It is an arithmetic number, because the mean of its divisors is an integer number (26530380).

Almost surely, 2^158297397 is an apocalyptic number.

It is an amenable number.

158297397 is a deficient number, since it is larger than the sum of its proper divisors (53945643).

158297397 is a wasteful number, since it uses less digits than its factorization.

158297397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294963.

The product of its digits is 952560, while the sum is 51.

The square root of 158297397 is about 12581.6293459949. The cubic root of 158297397 is about 540.9509956831.

The spelling of 158297397 in words is "one hundred fifty-eight million, two hundred ninety-seven thousand, three hundred ninety-seven".