32145561 has 12 divisors (see below), whose sum is σ = 53065792. Its totient is φ = 18368856.

The previous prime is 32145551. The next prime is 32145571. The reversal of 32145561 is 16554123.

32145561 is nontrivially palindromic in base 6.

It is an interprime number because it is at equal distance from previous prime (32145551) and next prime (32145571).

It is not a de Polignac number, because 32145561 - 2⁶ = 32145497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32145541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255061 + ... + 255186.

Almost surely, 2^32145561 is an apocalyptic number.

It is an amenable number.

32145561 is a deficient number, since it is larger than the sum of its proper divisors (20920231).

32145561 is a wasteful number, since it uses less digits than its factorization.

32145561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510260 (or 510257 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 32145561 is about 5669.7055479099. The cubic root of 32145561 is about 317.9608650072.

Adding to 32145561 its reverse (16554123), we get a palindrome (48699684).

The spelling of 32145561 in words is "thirty-two million, one hundred forty-five thousand, five hundred sixty-one".