32543531 has 2 divisors, whose sum is σ = 32543532. Its totient is φ = 32543530.

The previous prime is 32543503. The next prime is 32543543. The reversal of 32543531 is 13534523.

It is a strong prime.

It is an emirp because it is prime and its reverse (13534523) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32543531 is a prime.

It is a super-2 number, since 2×32543531² = 2118162819895922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32543531.

It is not a weakly prime, because it can be changed into another prime (32543591) 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 as a sum of consecutive naturals, namely, 16271765 + 16271766.

It is an arithmetic number, because the mean of its divisors is an integer number (16271766).

Almost surely, 2^32543531 is an apocalyptic number.

32543531 is a deficient number, since it is larger than the sum of its proper divisors (1).

32543531 is an equidigital number, since it uses as much as digits as its factorization.

32543531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 26.

The square root of 32543531 is about 5704.6937691694. The cubic root of 32543531 is about 319.2676317843.

The spelling of 32543531 in words is "thirty-two million, five hundred forty-three thousand, five hundred thirty-one".