55145043 has 10 divisors (see below), whose sum is σ = 82377284. Its totient is φ = 36763308.

The previous prime is 55145039. The next prime is 55145071. The reversal of 55145043 is 34054155.

55145043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55145043 - 2² = 55145039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55144998 and 55145016.

It is not an unprimeable number, because it can be changed into a prime (55145843) 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 in 9 ways as a sum of consecutive naturals, for example, 340321 + ... + 340482.

Almost surely, 2^55145043 is an apocalyptic number.

55145043 is a deficient number, since it is larger than the sum of its proper divisors (27232241).

55145043 is an equidigital number, since it uses as much as digits as its factorization.

55145043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680815 (or 680806 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 55145043 is about 7425.9708456201. The cubic root of 55145043 is about 380.6292506017.

Adding to 55145043 its reverse (34054155), we get a palindrome (89199198).

The spelling of 55145043 in words is "fifty-five million, one hundred forty-five thousand, forty-three".