1056643453 has 2 divisors, whose sum is σ = 1056643454. Its totient is φ = 1056643452.

The previous prime is 1056643439. The next prime is 1056643477. The reversal of 1056643453 is 3543466501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 649128484 + 407514969 = 25478^2 + 20187^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056643453 - 2⁹ = 1056642941 is a prime.

It is a super-2 number, since 2×1056643453² = 2232990773535526418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1056643853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528321726 + 528321727.

It is an arithmetic number, because the mean of its divisors is an integer number (528321727).

Almost surely, 2^1056643453 is an apocalyptic number.

It is an amenable number.

1056643453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056643453 is an equidigital number, since it uses as much as digits as its factorization.

1056643453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 1056643453 is about 32506.0525594850. The cubic root of 1056643453 is about 1018.5354648404.

The spelling of 1056643453 in words is "one billion, fifty-six million, six hundred forty-three thousand, four hundred fifty-three".