55422443 has 2 divisors, whose sum is σ = 55422444. Its totient is φ = 55422442.

The previous prime is 55422407. The next prime is 55422491. The reversal of 55422443 is 34422455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55422443 - 2⁶ = 55422379 is a prime.

It is not a weakly prime, because it can be changed into another prime (55422043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27711221 + 27711222.

It is an arithmetic number, because the mean of its divisors is an integer number (27711222).

Almost surely, 2^55422443 is an apocalyptic number.

55422443 is a deficient number, since it is larger than the sum of its proper divisors (1).

55422443 is an equidigital number, since it uses as much as digits as its factorization.

55422443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 29.

The square root of 55422443 is about 7444.6251080897. The cubic root of 55422443 is about 381.2664187859.

Adding to 55422443 its reverse (34422455), we get a palindrome (89844898).

The spelling of 55422443 in words is "fifty-five million, four hundred twenty-two thousand, four hundred forty-three".