158645317 has 2 divisors, whose sum is σ = 158645318. Its totient is φ = 158645316.

The previous prime is 158645293. The next prime is 158645327. The reversal of 158645317 is 713546851.

It is a happy number.

158645317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158608836 + 36481 = 12594^2 + 191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158645317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158645317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158645327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79322658 + 79322659.

It is an arithmetic number, because the mean of its divisors is an integer number (79322659).

Almost surely, 2^158645317 is an apocalyptic number.

It is an amenable number.

158645317 is a deficient number, since it is larger than the sum of its proper divisors (1).

158645317 is an equidigital number, since it uses as much as digits as its factorization.

158645317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The square root of 158645317 is about 12595.4482651472. The cubic root of 158645317 is about 541.3470223090.

The spelling of 158645317 in words is "one hundred fifty-eight million, six hundred forty-five thousand, three hundred seventeen".