2045553563 has 2 divisors, whose sum is σ = 2045553564. Its totient is φ = 2045553562.

The previous prime is 2045553551. The next prime is 2045553583. The reversal of 2045553563 is 3653555402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2045553563 is a prime.

It is not a weakly prime, because it can be changed into another prime (2045553583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022776781 + 1022776782.

It is an arithmetic number, because the mean of its divisors is an integer number (1022776782).

Almost surely, 2^2045553563 is an apocalyptic number.

2045553563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045553563 is an equidigital number, since it uses as much as digits as its factorization.

2045553563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270000, while the sum is 38.

The square root of 2045553563 is about 45227.7963535700. The cubic root of 2045553563 is about 1269.4149790708.

The spelling of 2045553563 in words is "two billion, forty-five million, five hundred fifty-three thousand, five hundred sixty-three".