147215161 has 4 divisors (see below), whose sum is σ = 147262324. Its totient is φ = 147168000.

The previous prime is 147215141. The next prime is 147215177. The reversal of 147215161 is 161512741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161512741 = 13 ⋅12424057.

It can be written as a sum of positive squares in 2 ways, for example, as 95648400 + 51566761 = 9780^2 + 7181^2 .

It is a cyclic number.

It is not a de Polignac number, because 147215161 - 2¹¹ = 147213113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147215141) 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 3 ways as a sum of consecutive naturals, for example, 18540 + ... + 25261.

It is an arithmetic number, because the mean of its divisors is an integer number (36815581).

Almost surely, 2^147215161 is an apocalyptic number.

It is an amenable number.

147215161 is a deficient number, since it is larger than the sum of its proper divisors (47163).

147215161 is an equidigital number, since it uses as much as digits as its factorization.

147215161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47162.

The product of its digits is 1680, while the sum is 28.

The square root of 147215161 is about 12133.2254986051. The cubic root of 147215161 is about 528.0205754627.

The spelling of 147215161 in words is "one hundred forty-seven million, two hundred fifteen thousand, one hundred sixty-one".