51773947 has 2 divisors, whose sum is σ = 51773948. Its totient is φ = 51773946.

The previous prime is 51773929. The next prime is 51773957. The reversal of 51773947 is 74937715.

51773947 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 51773947 - 2⁷ = 51773819 is a prime.

It is not a weakly prime, because it can be changed into another prime (51773927) 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, 25886973 + 25886974.

It is an arithmetic number, because the mean of its divisors is an integer number (25886974).

Almost surely, 2^51773947 is an apocalyptic number.

51773947 is a deficient number, since it is larger than the sum of its proper divisors (1).

51773947 is an equidigital number, since it uses as much as digits as its factorization.

51773947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220, while the sum is 43.

The square root of 51773947 is about 7195.4115240200. The cubic root of 51773947 is about 372.7094676422.

The spelling of 51773947 in words is "fifty-one million, seven hundred seventy-three thousand, nine hundred forty-seven".