158175397 has 2 divisors, whose sum is σ = 158175398. Its totient is φ = 158175396.

The previous prime is 158175359. The next prime is 158175427. The reversal of 158175397 is 793571851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154902916 + 3272481 = 12446^2 + 1809^2 .

It is a cyclic number.

It is not a de Polignac number, because 158175397 - 2¹⁵ = 158142629 is a prime.

It is a super-2 number, since 2×158175397² = 50038912432215218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158175307) 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, 79087698 + 79087699.

It is an arithmetic number, because the mean of its divisors is an integer number (79087699).

Almost surely, 2^158175397 is an apocalyptic number.

It is an amenable number.

158175397 is a deficient number, since it is larger than the sum of its proper divisors (1).

158175397 is an equidigital number, since it uses as much as digits as its factorization.

158175397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 46.

The square root of 158175397 is about 12576.7800728167. The cubic root of 158175397 is about 540.8119894320.

The spelling of 158175397 in words is "one hundred fifty-eight million, one hundred seventy-five thousand, three hundred ninety-seven".