55558943 has 8 divisors (see below), whose sum is σ = 61637760. Its totient is φ = 49651480.

The previous prime is 55558927. The next prime is 55558957. The reversal of 55558943 is 34985555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55558943 - 2⁴ = 55558927 is a prime.

It is a super-2 number, since 2×55558943² = 6173592294554498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55558894 and 55558903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55558903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42155 + ... + 43452.

It is an arithmetic number, because the mean of its divisors is an integer number (7704720).

Almost surely, 2^55558943 is an apocalyptic number.

55558943 is a deficient number, since it is larger than the sum of its proper divisors (6078817).

55558943 is a wasteful number, since it uses less digits than its factorization.

55558943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85677.

The product of its digits is 540000, while the sum is 44.

The square root of 55558943 is about 7453.7871582170. The cubic root of 55558943 is about 381.5791693386.

The spelling of 55558943 in words is "fifty-five million, five hundred fifty-eight thousand, nine hundred forty-three".