158146521 has 16 divisors (see below), whose sum is σ = 227363136. Its totient is φ = 97200576.

The previous prime is 158146517. The next prime is 158146567. The reversal of 158146521 is 125641851.

It is not a de Polignac number, because 158146521 - 2² = 158146517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158146501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37506 + ... + 41508.

It is an arithmetic number, because the mean of its divisors is an integer number (14210196).

Almost surely, 2^158146521 is an apocalyptic number.

It is an amenable number.

158146521 is a deficient number, since it is larger than the sum of its proper divisors (69216615).

158146521 is a wasteful number, since it uses less digits than its factorization.

158146521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032.

The product of its digits is 9600, while the sum is 33.

The square root of 158146521 is about 12575.6320318304. The cubic root of 158146521 is about 540.7790777873.

The spelling of 158146521 in words is "one hundred fifty-eight million, one hundred forty-six thousand, five hundred twenty-one".