32151643 has 2 divisors, whose sum is σ = 32151644. Its totient is φ = 32151642.

The previous prime is 32151617. The next prime is 32151653. The reversal of 32151643 is 34615123.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32151643 is a prime.

It is not a weakly prime, because it can be changed into another prime (32151653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16075821 + 16075822.

It is an arithmetic number, because the mean of its divisors is an integer number (16075822).

Almost surely, 2^32151643 is an apocalyptic number.

32151643 is a deficient number, since it is larger than the sum of its proper divisors (1).

32151643 is an equidigital number, since it uses as much as digits as its factorization.

32151643 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 32151643 is about 5670.2418819659. The cubic root of 32151643 is about 317.9809166719.

Adding to 32151643 its reverse (34615123), we get a palindrome (66766766).

The spelling of 32151643 in words is "thirty-two million, one hundred fifty-one thousand, six hundred forty-three".