55212743 has 2 divisors, whose sum is σ = 55212744. Its totient is φ = 55212742.

The previous prime is 55212739. The next prime is 55212779. The reversal of 55212743 is 34721255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55212743 - 2² = 55212739 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55212713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27606371 + 27606372.

It is an arithmetic number, because the mean of its divisors is an integer number (27606372).

Almost surely, 2^55212743 is an apocalyptic number.

55212743 is a deficient number, since it is larger than the sum of its proper divisors (1).

55212743 is an equidigital number, since it uses as much as digits as its factorization.

55212743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 55212743 is about 7430.5277739875. The cubic root of 55212743 is about 380.7849494697.

Adding to 55212743 its reverse (34721255), we get a palindrome (89933998).

It can be divided in two parts, 55212 and 743, that added together give a palindrome (55955).

The spelling of 55212743 in words is "fifty-five million, two hundred twelve thousand, seven hundred forty-three".