32481821 has 2 divisors, whose sum is σ = 32481822. Its totient is φ = 32481820.

The previous prime is 32481809. The next prime is 32481833. The reversal of 32481821 is 12818423.

It is a balanced prime because it is at equal distance from previous prime (32481809) and next prime (32481833).

It can be written as a sum of positive squares in only one way, i.e., 17935225 + 14546596 = 4235^2 + 3814^2 .

It is a cyclic number.

It is not a de Polignac number, because 32481821 - 2¹⁰ = 32480797 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32481871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16240910 + 16240911.

It is an arithmetic number, because the mean of its divisors is an integer number (16240911).

Almost surely, 2^32481821 is an apocalyptic number.

It is an amenable number.

32481821 is a deficient number, since it is larger than the sum of its proper divisors (1).

32481821 is an equidigital number, since it uses as much as digits as its factorization.

32481821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 29.

The square root of 32481821 is about 5699.2824987010. The cubic root of 32481821 is about 319.0657025400.

The spelling of 32481821 in words is "thirty-two million, four hundred eighty-one thousand, eight hundred twenty-one".