157147 has 4 divisors (see below), whose sum is σ = 158256. Its totient is φ = 156040.

The previous prime is 157141. The next prime is 157163. The reversal of 157147 is 741751.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 741751 = 431 ⋅1721.

It is a cyclic number.

It is not a de Polignac number, because 157147 - 2⁷ = 157019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304 + ... + 637.

It is an arithmetic number, because the mean of its divisors is an integer number (39564).

2¹⁵⁷¹⁴⁷ is an apocalyptic number.

157147 is a deficient number, since it is larger than the sum of its proper divisors (1109).

157147 is an equidigital number, since it uses as much as digits as its factorization.

157147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108.

The product of its digits is 980, while the sum is 25.

The square root of 157147 is about 396.4177089889. The cubic root of 157147 is about 53.9637388018.

Adding to 157147 its reverse (741751), we get a palindrome (898898).

It can be divided in two parts, 1571 and 47, that multiplied together give a palindrome (73837).

The spelling of 157147 in words is "one hundred fifty-seven thousand, one hundred forty-seven".