51680003 has 2 divisors, whose sum is σ = 51680004. Its totient is φ = 51680002.

The previous prime is 51679997. The next prime is 51680053. The reversal of 51680003 is 30008615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51680003 - 2⁶ = 51679939 is a prime.

It is not a weakly prime, because it can be changed into another prime (51680053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25840001 + 25840002.

It is an arithmetic number, because the mean of its divisors is an integer number (25840002).

Almost surely, 2^51680003 is an apocalyptic number.

51680003 is a deficient number, since it is larger than the sum of its proper divisors (1).

51680003 is an equidigital number, since it uses as much as digits as its factorization.

51680003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 51680003 is about 7188.8805109001. The cubic root of 51680003 is about 372.4839036331.

Adding to 51680003 its reverse (30008615), we get a palindrome (81688618).

The spelling of 51680003 in words is "fifty-one million, six hundred eighty thousand, three".