55243339 has 2 divisors, whose sum is σ = 55243340. Its totient is φ = 55243338.

The previous prime is 55243337. The next prime is 55243361. The reversal of 55243339 is 93334255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55243339 - 2¹ = 55243337 is a prime.

Together with 55243337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55243337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27621669 + 27621670.

It is an arithmetic number, because the mean of its divisors is an integer number (27621670).

Almost surely, 2^55243339 is an apocalyptic number.

55243339 is a deficient number, since it is larger than the sum of its proper divisors (1).

55243339 is an equidigital number, since it uses as much as digits as its factorization.

55243339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 34.

The square root of 55243339 is about 7432.5862928055. The cubic root of 55243339 is about 380.8552734826.

The spelling of 55243339 in words is "fifty-five million, two hundred forty-three thousand, three hundred thirty-nine".