32245621 has 2 divisors, whose sum is σ = 32245622. Its totient is φ = 32245620.

The previous prime is 32245607. The next prime is 32245663. The reversal of 32245621 is 12654223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32148900 + 96721 = 5670^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 32245621 - 2⁵ = 32245589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32245121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16122810 + 16122811.

It is an arithmetic number, because the mean of its divisors is an integer number (16122811).

Almost surely, 2^32245621 is an apocalyptic number.

It is an amenable number.

32245621 is a deficient number, since it is larger than the sum of its proper divisors (1).

32245621 is an equidigital number, since it uses as much as digits as its factorization.

32245621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 32245621 is about 5678.5227832597. The cubic root of 32245621 is about 318.2904305792.

Adding to 32245621 its reverse (12654223), we get a palindrome (44899844).

The spelling of 32245621 in words is "thirty-two million, two hundred forty-five thousand, six hundred twenty-one".