32225521 has 2 divisors, whose sum is σ = 32225522. Its totient is φ = 32225520.

The previous prime is 32225491. The next prime is 32225569. The reversal of 32225521 is 12552223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29866225 + 2359296 = 5465^2 + 1536^2 .

It is an emirp because it is prime and its reverse (12552223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32225521 - 2¹⁷ = 32094449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32225492 and 32225501.

It is not a weakly prime, because it can be changed into another prime (32225581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16112760 + 16112761.

It is an arithmetic number, because the mean of its divisors is an integer number (16112761).

Almost surely, 2^32225521 is an apocalyptic number.

It is an amenable number.

32225521 is a deficient number, since it is larger than the sum of its proper divisors (1).

32225521 is an equidigital number, since it uses as much as digits as its factorization.

32225521 is an evil number, because the sum of its binary digits is even.

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

The square root of 32225521 is about 5676.7526808907. The cubic root of 32225521 is about 318.2242823993.

Adding to 32225521 its reverse (12552223), we get a palindrome (44777744).

The spelling of 32225521 in words is "thirty-two million, two hundred twenty-five thousand, five hundred twenty-one".