158106145 has 4 divisors (see below), whose sum is σ = 189727380. Its totient is φ = 126484912.

The previous prime is 158106139. The next prime is 158106149. The reversal of 158106145 is 541601851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97950609 + 60155536 = 9897^2 + 7756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158106145 is a prime.

It is a super-2 number, since 2×158106145² = 49995106173522050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) 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 (158106149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15810610 + ... + 15810619.

It is an arithmetic number, because the mean of its divisors is an integer number (47431845).

Almost surely, 2^158106145 is an apocalyptic number.

It is an amenable number.

158106145 is a deficient number, since it is larger than the sum of its proper divisors (31621235).

158106145 is an equidigital number, since it uses as much as digits as its factorization.

158106145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31621234.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 158106145 is about 12574.0266024850. The cubic root of 158106145 is about 540.7330522107.

Adding to 158106145 its reverse (541601851), we get a palindrome (699707996).

The spelling of 158106145 in words is "one hundred fifty-eight million, one hundred six thousand, one hundred forty-five".