32161543 has 2 divisors, whose sum is σ = 32161544. Its totient is φ = 32161542.

The previous prime is 32161523. The next prime is 32161553. The reversal of 32161543 is 34516123.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32161543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32161523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16080771 + 16080772.

It is an arithmetic number, because the mean of its divisors is an integer number (16080772).

Almost surely, 2^32161543 is an apocalyptic number.

32161543 is a deficient number, since it is larger than the sum of its proper divisors (1).

32161543 is an equidigital number, since it uses as much as digits as its factorization.

32161543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 32161543 is about 5671.1147934070. The cubic root of 32161543 is about 318.0135504425.

Adding to 32161543 its reverse (34516123), we get a palindrome (66677666).

The spelling of 32161543 in words is "thirty-two million, one hundred sixty-one thousand, five hundred forty-three".