55345243 has 2 divisors, whose sum is σ = 55345244. Its totient is φ = 55345242.

The previous prime is 55345237. The next prime is 55345289. The reversal of 55345243 is 34254355.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55345243 - 2⁵ = 55345211 is a prime.

It is not a weakly prime, because it can be changed into another prime (55345223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27672621 + 27672622.

It is an arithmetic number, because the mean of its divisors is an integer number (27672622).

Almost surely, 2^55345243 is an apocalyptic number.

55345243 is a deficient number, since it is larger than the sum of its proper divisors (1).

55345243 is an equidigital number, since it uses as much as digits as its factorization.

55345243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 31.

The square root of 55345243 is about 7439.4383524565. The cubic root of 55345243 is about 381.0893097605.

Adding to 55345243 its reverse (34254355), we get a palindrome (89599598).

It can be divided in two parts, 553 and 45243, that added together give a square (45796 = 214²).

The spelling of 55345243 in words is "fifty-five million, three hundred forty-five thousand, two hundred forty-three".