51545542043 has 2 divisors, whose sum is σ = 51545542044. Its totient is φ = 51545542042.

The previous prime is 51545542039. The next prime is 51545542057. The reversal of 51545542043 is 34024554515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51545542043 - 2² = 51545542039 is a prime.

It is a super-2 number, since 2×51545542043² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51545541988 and 51545542006.

It is not a weakly prime, because it can be changed into another prime (51545542033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25772771021 + 25772771022.

It is an arithmetic number, because the mean of its divisors is an integer number (25772771022).

Almost surely, 2^51545542043 is an apocalyptic number.

51545542043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51545542043 is an equidigital number, since it uses as much as digits as its factorization.

51545542043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 51545542043 in words is "fifty-one billion, five hundred forty-five million, five hundred forty-two thousand, forty-three".