55354790389 has 2 divisors, whose sum is σ = 55354790390. Its totient is φ = 55354790388.

The previous prime is 55354790377. The next prime is 55354790417. The reversal of 55354790389 is 98309745355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32195124900 + 23159665489 = 179430^2 + 152183^2 .

It is a cyclic number.

It is not a de Polignac number, because 55354790389 - 2⁹ = 55354789877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55354790089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27677395194 + 27677395195.

It is an arithmetic number, because the mean of its divisors is an integer number (27677395195).

Almost surely, 2^55354790389 is an apocalyptic number.

It is an amenable number.

55354790389 is a deficient number, since it is larger than the sum of its proper divisors (1).

55354790389 is an equidigital number, since it uses as much as digits as its factorization.

55354790389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412000, while the sum is 58.

The spelling of 55354790389 in words is "fifty-five billion, three hundred fifty-four million, seven hundred ninety thousand, three hundred eighty-nine".