51443747 has 2 divisors, whose sum is σ = 51443748. Its totient is φ = 51443746.

The previous prime is 51443723. The next prime is 51443753. The reversal of 51443747 is 74734415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51443747 - 2¹² = 51439651 is a prime.

It is not a weakly prime, because it can be changed into another prime (51445747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25721873 + 25721874.

It is an arithmetic number, because the mean of its divisors is an integer number (25721874).

Almost surely, 2^51443747 is an apocalyptic number.

51443747 is a deficient number, since it is larger than the sum of its proper divisors (1).

51443747 is an equidigital number, since it uses as much as digits as its factorization.

51443747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 35.

The square root of 51443747 is about 7172.4296441304. The cubic root of 51443747 is about 371.9154310206.

The spelling of 51443747 in words is "fifty-one million, four hundred forty-three thousand, seven hundred forty-seven".