32561567 has 4 divisors (see below), whose sum is σ = 32583096. Its totient is φ = 32540040.

The previous prime is 32561549. The next prime is 32561593. The reversal of 32561567 is 76516523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76516523 = 419 ⋅182617.

It is a cyclic number.

It is not a de Polignac number, because 32561567 - 2¹⁶ = 32496031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32561597) 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, 8309 + ... + 11582.

It is an arithmetic number, because the mean of its divisors is an integer number (8145774).

Almost surely, 2^32561567 is an apocalyptic number.

32561567 is a deficient number, since it is larger than the sum of its proper divisors (21529).

32561567 is a wasteful number, since it uses less digits than its factorization.

32561567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21528.

The product of its digits is 37800, while the sum is 35.

The square root of 32561567 is about 5706.2743537268. The cubic root of 32561567 is about 319.3266014923.

The spelling of 32561567 in words is "thirty-two million, five hundred sixty-one thousand, five hundred sixty-seven".