55243337 has 2 divisors, whose sum is σ = 55243338. Its totient is φ = 55243336.

The previous prime is 55243313. The next prime is 55243339. The reversal of 55243337 is 73334255.

55243337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51036736 + 4206601 = 7144^2 + 2051^2 .

It is a cyclic number.

It is not a de Polignac number, because 55243337 - 2²⁰ = 54194761 is a prime.

Together with 55243339, 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 (55243339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27621668 + 27621669.

It is an arithmetic number, because the mean of its divisors is an integer number (27621669).

Almost surely, 2^55243337 is an apocalyptic number.

It is an amenable number.

55243337 is a deficient number, since it is larger than the sum of its proper divisors (1).

55243337 is an equidigital number, since it uses as much as digits as its factorization.

55243337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 32.

The square root of 55243337 is about 7432.5861582628. The cubic root of 55243337 is about 380.8552688865.

The spelling of 55243337 in words is "fifty-five million, two hundred forty-three thousand, three hundred thirty-seven".