55044287 has 2 divisors, whose sum is σ = 55044288. Its totient is φ = 55044286.

The previous prime is 55044281. The next prime is 55044289. The reversal of 55044287 is 78244055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55044287 - 2²² = 50849983 is a prime.

Together with 55044289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55044281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27522143 + 27522144.

It is an arithmetic number, because the mean of its divisors is an integer number (27522144).

Almost surely, 2^55044287 is an apocalyptic number.

55044287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55044287 is an equidigital number, since it uses as much as digits as its factorization.

55044287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 55044287 is about 7419.1837152075. The cubic root of 55044287 is about 380.3972922401.

The spelling of 55044287 in words is "fifty-five million, forty-four thousand, two hundred eighty-seven".