32245021 has 4 divisors (see below), whose sum is σ = 32335200. Its totient is φ = 32154844.

The previous prime is 32245007. The next prime is 32245043. The reversal of 32245021 is 12054223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12054223 = 2671 ⋅4513.

It is a cyclic number.

It is not a de Polignac number, because 32245021 - 2⁷ = 32244893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32245021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32245001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44551 + ... + 45268.

It is an arithmetic number, because the mean of its divisors is an integer number (8083800).

Almost surely, 2^32245021 is an apocalyptic number.

It is an amenable number.

32245021 is a deficient number, since it is larger than the sum of its proper divisors (90179).

32245021 is an equidigital number, since it uses as much as digits as its factorization.

32245021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90178.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 32245021 is about 5678.4699523727. The cubic root of 32245021 is about 318.2884564048.

Adding to 32245021 its reverse (12054223), we get a palindrome (44299244).

The spelling of 32245021 in words is "thirty-two million, two hundred forty-five thousand, twenty-one".