51121043 has 2 divisors, whose sum is σ = 51121044. Its totient is φ = 51121042.

The previous prime is 51121033. The next prime is 51121061. The reversal of 51121043 is 34012115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51121043 - 2⁸ = 51120787 is a prime.

It is a super-2 number, since 2×51121043² = 5226722074815698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51121033) 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, 25560521 + 25560522.

It is an arithmetic number, because the mean of its divisors is an integer number (25560522).

Almost surely, 2^51121043 is an apocalyptic number.

51121043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51121043 is an equidigital number, since it uses as much as digits as its factorization.

51121043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51121043 is about 7149.8981111621. The cubic root of 51121043 is about 371.1361303970.

Adding to 51121043 its reverse (34012115), we get a palindrome (85133158).

The spelling of 51121043 in words is "fifty-one million, one hundred twenty-one thousand, forty-three".