32531161 has 4 divisors (see below), whose sum is σ = 35033572. Its totient is φ = 30028752.

The previous prime is 32531153. The next prime is 32531171. The reversal of 32531161 is 16113523.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16113523 = 1789 ⋅9007.

It can be written as a sum of positive squares in 2 ways, for example, as 1394761 + 31136400 = 1181^2 + 5580^2 .

It is not a de Polignac number, because 32531161 - 2³ = 32531153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32531101) 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, 1251186 + ... + 1251211.

It is an arithmetic number, because the mean of its divisors is an integer number (8758393).

Almost surely, 2^32531161 is an apocalyptic number.

It is an amenable number.

32531161 is a deficient number, since it is larger than the sum of its proper divisors (2502411).

32531161 is a wasteful number, since it uses less digits than its factorization.

32531161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502410.

The product of its digits is 540, while the sum is 22.

The square root of 32531161 is about 5703.6094712033. The cubic root of 32531161 is about 319.2271747823.

Adding to 32531161 its reverse (16113523), we get a palindrome (48644684).

The spelling of 32531161 in words is "thirty-two million, five hundred thirty-one thousand, one hundred sixty-one".