55120543 has 2 divisors, whose sum is σ = 55120544. Its totient is φ = 55120542.

The previous prime is 55120531. The next prime is 55120547. The reversal of 55120543 is 34502155.

55120543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55120543 is a prime.

It is a super-2 number, since 2×55120543² = 6076548521229698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55120547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560271 + 27560272.

It is an arithmetic number, because the mean of its divisors is an integer number (27560272).

Almost surely, 2^55120543 is an apocalyptic number.

55120543 is a deficient number, since it is larger than the sum of its proper divisors (1).

55120543 is an equidigital number, since it uses as much as digits as its factorization.

55120543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55120543 is about 7424.3210463988. The cubic root of 55120543 is about 380.5728732284.

Adding to 55120543 its reverse (34502155), we get a palindrome (89622698).

The spelling of 55120543 in words is "fifty-five million, one hundred twenty thousand, five hundred forty-three".