51927947 has 2 divisors, whose sum is σ = 51927948. Its totient is φ = 51927946.

The previous prime is 51927943. The next prime is 51927949. The reversal of 51927947 is 74972915.

51927947 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 51927947 - 2² = 51927943 is a prime.

Together with 51927949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51927898 and 51927907.

It is not a weakly prime, because it can be changed into another prime (51927943) 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, 25963973 + 25963974.

It is an arithmetic number, because the mean of its divisors is an integer number (25963974).

Almost surely, 2^51927947 is an apocalyptic number.

51927947 is a deficient number, since it is larger than the sum of its proper divisors (1).

51927947 is an equidigital number, since it uses as much as digits as its factorization.

51927947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 51927947 is about 7206.1048424235. The cubic root of 51927947 is about 373.0786394388.

The spelling of 51927947 in words is "fifty-one million, nine hundred twenty-seven thousand, nine hundred forty-seven".