55624243 has 2 divisors, whose sum is σ = 55624244. Its totient is φ = 55624242.

The previous prime is 55624211. The next prime is 55624259. The reversal of 55624243 is 34242655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55624243 - 2⁵ = 55624211 is a prime.

It is not a weakly prime, because it can be changed into another prime (55624043) 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, 27812121 + 27812122.

It is an arithmetic number, because the mean of its divisors is an integer number (27812122).

Almost surely, 2^55624243 is an apocalyptic number.

55624243 is a deficient number, since it is larger than the sum of its proper divisors (1).

55624243 is an equidigital number, since it uses as much as digits as its factorization.

55624243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 31.

The square root of 55624243 is about 7458.1661955202. The cubic root of 55624243 is about 381.7286044121.

Adding to 55624243 its reverse (34242655), we get a palindrome (89866898).

The spelling of 55624243 in words is "fifty-five million, six hundred twenty-four thousand, two hundred forty-three".