55505043 has 24 divisors (see below), whose sum is σ = 90483120. Its totient is φ = 32477760.

The previous prime is 55505029. The next prime is 55505071. The reversal of 55505043 is 34050555.

It is not a de Polignac number, because 55505043 - 2¹⁰ = 55504019 is a prime.

It is a super-3 number, since 3×55505043³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55504998 and 55505016.

It is not an unprimeable number, because it can be changed into a prime (55506043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6796 + ... + 12537.

It is an arithmetic number, because the mean of its divisors is an integer number (3770130).

Almost surely, 2^55505043 is an apocalyptic number.

55505043 is a deficient number, since it is larger than the sum of its proper divisors (34978077).

55505043 is a wasteful number, since it uses less digits than its factorization.

55505043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19379 (or 19376 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55505043 is about 7450.1706691860. The cubic root of 55505043 is about 381.4557342341.

Adding to 55505043 its reverse (34050555), we get a palindrome (89555598).

The spelling of 55505043 in words is "fifty-five million, five hundred five thousand, forty-three".