158530397 has 2 divisors, whose sum is σ = 158530398. Its totient is φ = 158530396.

The previous prime is 158530391. The next prime is 158530409. The reversal of 158530397 is 793035851.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121308196 + 37222201 = 11014^2 + 6101^2 .

It is a cyclic number.

It is not a de Polignac number, because 158530397 - 2⁴ = 158530381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158530391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79265198 + 79265199.

It is an arithmetic number, because the mean of its divisors is an integer number (79265199).

Almost surely, 2^158530397 is an apocalyptic number.

It is an amenable number.

158530397 is a deficient number, since it is larger than the sum of its proper divisors (1).

158530397 is an equidigital number, since it uses as much as digits as its factorization.

158530397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 158530397 is about 12590.8854732302. The cubic root of 158530397 is about 541.2162765072.

The spelling of 158530397 in words is "one hundred fifty-eight million, five hundred thirty thousand, three hundred ninety-seven".