32505413 has 2 divisors, whose sum is σ = 32505414. Its totient is φ = 32505412.

The previous prime is 32505397. The next prime is 32505427. The reversal of 32505413 is 31450523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23493409 + 9012004 = 4847^2 + 3002^2 .

It is a cyclic number.

It is not a de Polignac number, because 32505413 - 2⁴ = 32505397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32505493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16252706 + 16252707.

It is an arithmetic number, because the mean of its divisors is an integer number (16252707).

Almost surely, 2^32505413 is an apocalyptic number.

It is an amenable number.

32505413 is a deficient number, since it is larger than the sum of its proper divisors (1).

32505413 is an equidigital number, since it uses as much as digits as its factorization.

32505413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 32505413 is about 5701.3518572353. The cubic root of 32505413 is about 319.1429311368.

Adding to 32505413 its reverse (31450523), we get a palindrome (63955936).

The spelling of 32505413 in words is "thirty-two million, five hundred five thousand, four hundred thirteen".