1016521433 has 2 divisors, whose sum is σ = 1016521434. Its totient is φ = 1016521432.

The previous prime is 1016521411. The next prime is 1016521453. The reversal of 1016521433 is 3341256101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522259609 + 494261824 = 22853^2 + 22232^2 .

It is an emirp because it is prime and its reverse (3341256101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1016521433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1016521453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508260716 + 508260717.

It is an arithmetic number, because the mean of its divisors is an integer number (508260717).

Almost surely, 2^1016521433 is an apocalyptic number.

It is an amenable number.

1016521433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1016521433 is an equidigital number, since it uses as much as digits as its factorization.

1016521433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1016521433 is about 31882.9332558973. The cubic root of 1016521433 is about 1005.4770910389.

Adding to 1016521433 its reverse (3341256101), we get a palindrome (4357777534).

The spelling of 1016521433 in words is "one billion, sixteen million, five hundred twenty-one thousand, four hundred thirty-three".