51911803 has 2 divisors, whose sum is σ = 51911804. Its totient is φ = 51911802.

The previous prime is 51911791. The next prime is 51911807. The reversal of 51911803 is 30811915.

51911803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51911803 - 2⁵ = 51911771 is a prime.

It is equal to p_3108871 and since 51911803 and 3108871 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51911807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25955901 + 25955902.

It is an arithmetic number, because the mean of its divisors is an integer number (25955902).

Almost surely, 2^51911803 is an apocalyptic number.

51911803 is a deficient number, since it is larger than the sum of its proper divisors (1).

51911803 is an equidigital number, since it uses as much as digits as its factorization.

51911803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 51911803 is about 7204.9845940155. The cubic root of 51911803 is about 373.0399730034.

The spelling of 51911803 in words is "fifty-one million, nine hundred eleven thousand, eight hundred three".