1016521453 has 2 divisors, whose sum is σ = 1016521454. Its totient is φ = 1016521452.

The previous prime is 1016521433. The next prime is 1016521483. The reversal of 1016521453 is 3541256101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 908299044 + 108222409 = 30138^2 + 10403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1016521453 - 2⁹ = 1016520941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1016521433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508260726 + 508260727.

It is an arithmetic number, because the mean of its divisors is an integer number (508260727).

Almost surely, 2^1016521453 is an apocalyptic number.

It is an amenable number.

1016521453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1016521453 is an equidigital number, since it uses as much as digits as its factorization.

1016521453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1016521453 is about 31882.9335695447. The cubic root of 1016521453 is about 1005.4770976331.

Adding to 1016521453 its reverse (3541256101), we get a palindrome (4557777554).

The spelling of 1016521453 in words is "one billion, sixteen million, five hundred twenty-one thousand, four hundred fifty-three".