51208783 has 2 divisors, whose sum is σ = 51208784. Its totient is φ = 51208782.

The previous prime is 51208763. The next prime is 51208789. The reversal of 51208783 is 38780215.

51208783 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 51208783 - 2¹⁷ = 51077711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51208789) 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, 25604391 + 25604392.

It is an arithmetic number, because the mean of its divisors is an integer number (25604392).

Almost surely, 2^51208783 is an apocalyptic number.

51208783 is a deficient number, since it is larger than the sum of its proper divisors (1).

51208783 is an equidigital number, since it uses as much as digits as its factorization.

51208783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 51208783 is about 7156.0312324640. The cubic root of 51208783 is about 371.3483383264.

Adding to 51208783 its reverse (38780215), we get a palindrome (89988998).

The spelling of 51208783 in words is "fifty-one million, two hundred eight thousand, seven hundred eighty-three".