158317507 has 2 divisors, whose sum is σ = 158317508. Its totient is φ = 158317506.

The previous prime is 158317493. The next prime is 158317517. The reversal of 158317507 is 705713851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158317507 - 2¹¹ = 158315459 is a prime.

It is not a weakly prime, because it can be changed into another prime (158317517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79158753 + 79158754.

It is an arithmetic number, because the mean of its divisors is an integer number (79158754).

Almost surely, 2^158317507 is an apocalyptic number.

158317507 is a deficient number, since it is larger than the sum of its proper divisors (1).

158317507 is an equidigital number, since it uses as much as digits as its factorization.

158317507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 37.

The square root of 158317507 is about 12582.4285016844. The cubic root of 158317507 is about 540.9739020692.

The spelling of 158317507 in words is "one hundred fifty-eight million, three hundred seventeen thousand, five hundred seven".