55043544042397 has 2 divisors, whose sum is σ = 55043544042398. Its totient is φ = 55043544042396.

The previous prime is 55043544042337. The next prime is 55043544042457. The reversal of 55043544042397 is 79324044534055.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (55043544042337) and next prime (55043544042457).

It can be written as a sum of positive squares in only one way, i.e., 46904499926596 + 8139044115801 = 6848686^2 + 2852901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55043544042397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55043544042337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27521772021198 + 27521772021199.

It is an arithmetic number, because the mean of its divisors is an integer number (27521772021199).

Almost surely, 2^{55043544042397} is an apocalyptic number.

It is an amenable number.

55043544042397 is a deficient number, since it is larger than the sum of its proper divisors (1).

55043544042397 is an equidigital number, since it uses as much as digits as its factorization.

55043544042397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288000, while the sum is 55.

The spelling of 55043544042397 in words is "fifty-five trillion, forty-three billion, five hundred forty-four million, forty-two thousand, three hundred ninety-seven".