2003940553 has 2 divisors, whose sum is σ = 2003940554. Its totient is φ = 2003940552.

The previous prime is 2003940529. The next prime is 2003940563. The reversal of 2003940553 is 3550493002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1586269584 + 417670969 = 39828^2 + 20437^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003940553 - 2¹³ = 2003932361 is a prime.

It is not a weakly prime, because it can be changed into another prime (2003940503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001970276 + 1001970277.

It is an arithmetic number, because the mean of its divisors is an integer number (1001970277).

Almost surely, 2^2003940553 is an apocalyptic number.

It is an amenable number.

2003940553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003940553 is an equidigital number, since it uses as much as digits as its factorization.

2003940553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 2003940553 is about 44765.3945922517. The cubic root of 2003940553 is about 1260.7479713233.

The spelling of 2003940553 in words is "two billion, three million, nine hundred forty thousand, five hundred fifty-three".