32551035221 has 2 divisors, whose sum is σ = 32551035222. Its totient is φ = 32551035220.

The previous prime is 32551035173. The next prime is 32551035271. The reversal of 32551035221 is 12253015523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28777390321 + 3773644900 = 169639^2 + 61430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32551035221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32551035271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16275517610 + 16275517611.

It is an arithmetic number, because the mean of its divisors is an integer number (16275517611).

Almost surely, 2^32551035221 is an apocalyptic number.

It is an amenable number.

32551035221 is a deficient number, since it is larger than the sum of its proper divisors (1).

32551035221 is an equidigital number, since it uses as much as digits as its factorization.

32551035221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 32551035221 in words is "thirty-two billion, five hundred fifty-one million, thirty-five thousand, two hundred twenty-one".