55954289 has 2 divisors, whose sum is σ = 55954290. Its totient is φ = 55954288.

The previous prime is 55954279. The next prime is 55954291. The reversal of 55954289 is 98245955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31550689 + 24403600 = 5617^2 + 4940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55954289 is a prime.

Together with 55954291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55954219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27977144 + 27977145.

It is an arithmetic number, because the mean of its divisors is an integer number (27977145).

Almost surely, 2^55954289 is an apocalyptic number.

It is an amenable number.

55954289 is a deficient number, since it is larger than the sum of its proper divisors (1).

55954289 is an equidigital number, since it uses as much as digits as its factorization.

55954289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 47.

The square root of 55954289 is about 7480.2599553759. The cubic root of 55954289 is about 382.4821106020.

The spelling of 55954289 in words is "fifty-five million, nine hundred fifty-four thousand, two hundred eighty-nine".