158029257 has 32 divisors (see below), whose sum is σ = 224155008. Its totient is φ = 98896896.

The previous prime is 158029237. The next prime is 158029259. The reversal of 158029257 is 752920851.

It is not a de Polignac number, because 158029257 - 2¹⁹ = 157504969 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (158029259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 539203 + ... + 539495.

It is an arithmetic number, because the mean of its divisors is an integer number (7004844).

Almost surely, 2^158029257 is an apocalyptic number.

It is an amenable number.

158029257 is a deficient number, since it is larger than the sum of its proper divisors (66125751).

158029257 is a wasteful number, since it uses less digits than its factorization.

158029257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 158029257 is about 12570.9688170801. The cubic root of 158029257 is about 540.6453840510.

The spelling of 158029257 in words is "one hundred fifty-eight million, twenty-nine thousand, two hundred fifty-seven".