2003551013 has 2 divisors, whose sum is σ = 2003551014. Its totient is φ = 2003551012.

The previous prime is 2003551009. The next prime is 2003551019. The reversal of 2003551013 is 3101553002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1139602564 + 863948449 = 33758^2 + 29393^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003551013 - 2² = 2003551009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003551019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001775506 + 1001775507.

It is an arithmetic number, because the mean of its divisors is an integer number (1001775507).

Almost surely, 2^2003551013 is an apocalyptic number.

It is an amenable number.

2003551013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003551013 is an equidigital number, since it uses as much as digits as its factorization.

2003551013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 2003551013 is about 44761.0434753257. The cubic root of 2003551013 is about 1260.6662750226. Note that the first 3 decimals are identical.

The spelling of 2003551013 in words is "two billion, three million, five hundred fifty-one thousand, thirteen".