51054122389 has 2 divisors, whose sum is σ = 51054122390. Its totient is φ = 51054122388.

The previous prime is 51054122369. The next prime is 51054122443. The reversal of 51054122389 is 98322145015.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33495222289 + 17558900100 = 183017^2 + 132510^2 .

It is a cyclic number.

It is not a de Polignac number, because 51054122389 - 2⁷ = 51054122261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51054122359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25527061194 + 25527061195.

It is an arithmetic number, because the mean of its divisors is an integer number (25527061195).

Almost surely, 2^51054122389 is an apocalyptic number.

It is an amenable number.

51054122389 is a deficient number, since it is larger than the sum of its proper divisors (1).

51054122389 is an equidigital number, since it uses as much as digits as its factorization.

51054122389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 51054122389 in words is "fifty-one billion, fifty-four million, one hundred twenty-two thousand, three hundred eighty-nine".