158996257 has 8 divisors (see below), whose sum is σ = 192398976. Its totient is φ = 128265792.

The previous prime is 158996251. The next prime is 158996273. The reversal of 158996257 is 752699851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158996257 - 2³ = 158996249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158996251) 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 in 7 ways as a sum of consecutive naturals, for example, 667933 + ... + 668170.

It is an arithmetic number, because the mean of its divisors is an integer number (24049872).

Almost surely, 2^158996257 is an apocalyptic number.

158996257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

158996257 is a deficient number, since it is larger than the sum of its proper divisors (33402719).

158996257 is a wasteful number, since it uses less digits than its factorization.

158996257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336127.

The product of its digits is 1360800, while the sum is 52.

The square root of 158996257 is about 12609.3717924407. The cubic root of 158996257 is about 541.7459003725.

The spelling of 158996257 in words is "one hundred fifty-eight million, nine hundred ninety-six thousand, two hundred fifty-seven".