32121385 has 4 divisors (see below), whose sum is σ = 38545668. Its totient is φ = 25697104.

The previous prime is 32121377. The next prime is 32121403. The reversal of 32121385 is 58312123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58312123 = 151 ⋅386173.

It can be written as a sum of positive squares in 2 ways, for example, as 19333609 + 12787776 = 4397^2 + 3576^2 .

It is a cyclic number.

It is not a de Polignac number, because 32121385 - 2³ = 32121377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3212134 + ... + 3212143.

It is an arithmetic number, because the mean of its divisors is an integer number (9636417).

Almost surely, 2^32121385 is an apocalyptic number.

It is an amenable number.

32121385 is a deficient number, since it is larger than the sum of its proper divisors (6424283).

32121385 is an equidigital number, since it uses as much as digits as its factorization.

32121385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424282.

The product of its digits is 1440, while the sum is 25.

The square root of 32121385 is about 5667.5731137763. The cubic root of 32121385 is about 317.8811344574.

The spelling of 32121385 in words is "thirty-two million, one hundred twenty-one thousand, three hundred eighty-five".