55253243 has 2 divisors, whose sum is σ = 55253244. Its totient is φ = 55253242.

The previous prime is 55253227. The next prime is 55253257. The reversal of 55253243 is 34235255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55253243 - 2⁴ = 55253227 is a prime.

It is not a weakly prime, because it can be changed into another prime (55253293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626621 + 27626622.

It is an arithmetic number, because the mean of its divisors is an integer number (27626622).

Almost surely, 2^55253243 is an apocalyptic number.

55253243 is a deficient number, since it is larger than the sum of its proper divisors (1).

55253243 is an equidigital number, since it uses as much as digits as its factorization.

55253243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 29.

The square root of 55253243 is about 7433.2525182453. The cubic root of 55253243 is about 380.8780319744.

Adding to 55253243 its reverse (34235255), we get a palindrome (89488498).

The spelling of 55253243 in words is "fifty-five million, two hundred fifty-three thousand, two hundred forty-three".