2005003061 has 2 divisors, whose sum is σ = 2005003062. Its totient is φ = 2005003060.

The previous prime is 2005003057. The next prime is 2005003111. The reversal of 2005003061 is 1603005002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1745986225 + 259016836 = 41785^2 + 16094^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005003061 - 2² = 2005003057 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005003031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002501530 + 1002501531.

It is an arithmetic number, because the mean of its divisors is an integer number (1002501531).

Almost surely, 2^2005003061 is an apocalyptic number.

It is an amenable number.

2005003061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005003061 is an equidigital number, since it uses as much as digits as its factorization.

2005003061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 2005003061 is about 44777.2605347848. The cubic root of 2005003061 is about 1260.9707520715.

Adding to 2005003061 its reverse (1603005002), we get a palindrome (3608008063).

The spelling of 2005003061 in words is "two billion, five million, three thousand, sixty-one".