51118043 has 2 divisors, whose sum is σ = 51118044. Its totient is φ = 51118042.

The previous prime is 51118033. The next prime is 51118049. The reversal of 51118043 is 34081115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51118043 - 2¹⁸ = 50855899 is a prime.

It is a super-2 number, since 2×51118043² = 5226108640299698, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51118049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25559021 + 25559022.

It is an arithmetic number, because the mean of its divisors is an integer number (25559022).

Almost surely, 2^51118043 is an apocalyptic number.

51118043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51118043 is an equidigital number, since it uses as much as digits as its factorization.

51118043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 51118043 is about 7149.6883148848. The cubic root of 51118043 is about 371.1288703067.

Adding to 51118043 its reverse (34081115), we get a palindrome (85199158).

The spelling of 51118043 in words is "fifty-one million, one hundred eighteen thousand, forty-three".