32616161 has 4 divisors (see below), whose sum is σ = 32655252. Its totient is φ = 32577072.

The previous prime is 32616131. The next prime is 32616223. The reversal of 32616161 is 16161623.

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 8014561 + 24601600 = 2831^2 + 4960^2 .

It is a cyclic number.

It is not a de Polignac number, because 32616161 - 2²² = 28421857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32616161.

It is not an unprimeable number, because it can be changed into a prime (32616131) 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, 18266 + ... + 19971.

It is an arithmetic number, because the mean of its divisors is an integer number (8163813).

Almost surely, 2^32616161 is an apocalyptic number.

It is an amenable number.

32616161 is a deficient number, since it is larger than the sum of its proper divisors (39091).

32616161 is an equidigital number, since it uses as much as digits as its factorization.

32616161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39090.

The product of its digits is 1296, while the sum is 26.

The square root of 32616161 is about 5711.0560319437. The cubic root of 32616161 is about 319.5049670116.

Adding to 32616161 its reverse (16161623), we get a palindrome (48777784).

The spelling of 32616161 in words is "thirty-two million, six hundred sixteen thousand, one hundred sixty-one".