51065803 has 2 divisors, whose sum is σ = 51065804. Its totient is φ = 51065802.

The previous prime is 51065801. The next prime is 51065813. The reversal of 51065803 is 30856015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51065803 - 2¹ = 51065801 is a prime.

Together with 51065801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51065801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25532901 + 25532902.

It is an arithmetic number, because the mean of its divisors is an integer number (25532902).

Almost surely, 2^51065803 is an apocalyptic number.

51065803 is a deficient number, since it is larger than the sum of its proper divisors (1).

51065803 is an equidigital number, since it uses as much as digits as its factorization.

51065803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51065803 is about 7146.0340749258. The cubic root of 51065803 is about 371.0024023694.

The spelling of 51065803 in words is "fifty-one million, sixty-five thousand, eight hundred three".