2043904553 has 2 divisors, whose sum is σ = 2043904554. Its totient is φ = 2043904552.

The previous prime is 2043904501. The next prime is 2043904559. The reversal of 2043904553 is 3554093402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1751255104 + 292649449 = 41848^2 + 17107^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043904553 - 2¹² = 2043900457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2043904559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021952276 + 1021952277.

It is an arithmetic number, because the mean of its divisors is an integer number (1021952277).

Almost surely, 2^2043904553 is an apocalyptic number.

It is an amenable number.

2043904553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043904553 is an equidigital number, since it uses as much as digits as its factorization.

2043904553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 2043904553 is about 45209.5626278335. The cubic root of 2043904553 is about 1269.0737770967.

Adding to 2043904553 its reverse (3554093402), we get a palindrome (5597997955).

The spelling of 2043904553 in words is "two billion, forty-three million, nine hundred four thousand, five hundred fifty-three".