32545021 has 16 divisors (see below), whose sum is σ = 36006768. Its totient is φ = 29286400.

The previous prime is 32545003. The next prime is 32545033. The reversal of 32545021 is 12054523.

It can be written as a sum of positive squares in 8 ways, for example, as 1240996 + 31304025 = 1114^2 + 5595^2 .

It is a cyclic number.

It is not a de Polignac number, because 32545021 - 2¹¹ = 32542973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32544983 and 32545001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32545061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36501 + ... + 37381.

It is an arithmetic number, because the mean of its divisors is an integer number (2250423).

Almost surely, 2^32545021 is an apocalyptic number.

It is an amenable number.

32545021 is a deficient number, since it is larger than the sum of its proper divisors (3461747).

32545021 is a wasteful number, since it uses less digits than its factorization.

32545021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 32545021 is about 5704.8243618888. The cubic root of 32545021 is about 319.2725042479.

Adding to 32545021 its reverse (12054523), we get a palindrome (44599544).

The spelling of 32545021 in words is "thirty-two million, five hundred forty-five thousand, twenty-one".