32867561 has 2 divisors, whose sum is σ = 32867562. Its totient is φ = 32867560.

The previous prime is 32867539. The next prime is 32867563. The reversal of 32867561 is 16576823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25441936 + 7425625 = 5044^2 + 2725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32867561 is a prime.

Together with 32867563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (32867563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16433780 + 16433781.

It is an arithmetic number, because the mean of its divisors is an integer number (16433781).

Almost surely, 2^32867561 is an apocalyptic number.

It is an amenable number.

32867561 is a deficient number, since it is larger than the sum of its proper divisors (1).

32867561 is an equidigital number, since it uses as much as digits as its factorization.

32867561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 32867561 is about 5733.0237222604. The cubic root of 32867561 is about 320.3237641139.

The spelling of 32867561 in words is "thirty-two million, eight hundred sixty-seven thousand, five hundred sixty-one".