32815961 has 4 divisors (see below), whose sum is σ = 32849124. Its totient is φ = 32782800.

The previous prime is 32815943. The next prime is 32815969. The reversal of 32815961 is 16951823.

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 27667600 + 5148361 = 5260^2 + 2269^2 .

It is a cyclic number.

It is not a de Polignac number, because 32815961 - 2⁶ = 32815897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32815969) 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, 15050 + ... + 17091.

It is an arithmetic number, because the mean of its divisors is an integer number (8212281).

Almost surely, 2^32815961 is an apocalyptic number.

It is an amenable number.

32815961 is a deficient number, since it is larger than the sum of its proper divisors (33163).

32815961 is a wasteful number, since it uses less digits than its factorization.

32815961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33162.

The product of its digits is 12960, while the sum is 35.

The square root of 32815961 is about 5728.5217115762. The cubic root of 32815961 is about 320.1560469387.

The spelling of 32815961 in words is "thirty-two million, eight hundred fifteen thousand, nine hundred sixty-one".