32645531 has 2 divisors, whose sum is σ = 32645532. Its totient is φ = 32645530.

The previous prime is 32645521. The next prime is 32645567. The reversal of 32645531 is 13554623.

It is a weak prime.

It is an emirp because it is prime and its reverse (13554623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32645531 - 2¹⁸ = 32383387 is a prime.

It is a super-2 number, since 2×32645531² = 2131461388543922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 32645494 and 32645503.

It is not a weakly prime, because it can be changed into another prime (32645521) 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, 16322765 + 16322766.

It is an arithmetic number, because the mean of its divisors is an integer number (16322766).

Almost surely, 2^32645531 is an apocalyptic number.

32645531 is a deficient number, since it is larger than the sum of its proper divisors (1).

32645531 is an equidigital number, since it uses as much as digits as its factorization.

32645531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 32645531 is about 5713.6267816510. The cubic root of 32645531 is about 319.6008401959.

The spelling of 32645531 in words is "thirty-two million, six hundred forty-five thousand, five hundred thirty-one".