13780003 has 2 divisors, whose sum is σ = 13780004. Its totient is φ = 13780002.

The previous prime is 13779973. The next prime is 13780009. The reversal of 13780003 is 30008731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13780003 - 2⁵ = 13779971 is a prime.

It is not a weakly prime, because it can be changed into another prime (13780009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6890001 + 6890002.

It is an arithmetic number, because the mean of its divisors is an integer number (6890002).

Almost surely, 2^13780003 is an apocalyptic number.

13780003 is a deficient number, since it is larger than the sum of its proper divisors (1).

13780003 is an equidigital number, since it uses as much as digits as its factorization.

13780003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 13780003 is about 3712.1426427334. The cubic root of 13780003 is about 239.7451171387.

Adding to 13780003 its reverse (30008731), we get a palindrome (43788734).

The spelling of 13780003 in words is "thirteen million, seven hundred eighty thousand, three".