55043544042457 has 2 divisors, whose sum is σ = 55043544042458. Its totient is φ = 55043544042456.

The previous prime is 55043544042397. The next prime is 55043544042493. The reversal of 55043544042457 is 75424044534055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40287658729536 + 14755885312921 = 6347256^2 + 3841339^2 .

It is a cyclic number.

It is not a de Polignac number, because 55043544042457 - 2⁴³ = 46247451020249 is a prime.

It is not a weakly prime, because it can be changed into another prime (55043544942457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27521772021228 + 27521772021229.

It is an arithmetic number, because the mean of its divisors is an integer number (27521772021229).

Almost surely, 2^{55043544042457} is an apocalyptic number.

It is an amenable number.

55043544042457 is a deficient number, since it is larger than the sum of its proper divisors (1).

55043544042457 is an equidigital number, since it uses as much as digits as its factorization.

55043544042457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880000, while the sum is 52.

The spelling of 55043544042457 in words is "fifty-five trillion, forty-three billion, five hundred forty-four million, forty-two thousand, four hundred fifty-seven".