32051531521 has 2 divisors, whose sum is σ = 32051531522. Its totient is φ = 32051531520.

The previous prime is 32051531507. The next prime is 32051531537. The reversal of 32051531521 is 12513515023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29364249600 + 2687281921 = 171360^2 + 51839^2 .

It is a cyclic number.

It is not a de Polignac number, because 32051531521 - 2¹¹ = 32051529473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32051531521.

It is not a weakly prime, because it can be changed into another prime (32051538521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16025765760 + 16025765761.

It is an arithmetic number, because the mean of its divisors is an integer number (16025765761).

Almost surely, 2^32051531521 is an apocalyptic number.

It is an amenable number.

32051531521 is a deficient number, since it is larger than the sum of its proper divisors (1).

32051531521 is an equidigital number, since it uses as much as digits as its factorization.

32051531521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 32051531521 in words is "thirty-two billion, fifty-one million, five hundred thirty-one thousand, five hundred twenty-one".