55966843 has 4 divisors (see below), whose sum is σ = 58400208. Its totient is φ = 53533480.

The previous prime is 55966819. The next prime is 55966853. The reversal of 55966843 is 34866955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34866955 = 5 ⋅6973391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55966843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55966793 and 55966802.

It is not an unprimeable number, because it can be changed into a prime (55966853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1216648 + ... + 1216693.

It is an arithmetic number, because the mean of its divisors is an integer number (14600052).

Almost surely, 2^55966843 is an apocalyptic number.

55966843 is a deficient number, since it is larger than the sum of its proper divisors (2433365).

55966843 is a wasteful number, since it uses less digits than its factorization.

55966843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433364.

The product of its digits is 777600, while the sum is 46.

The square root of 55966843 is about 7481.0990502733. The cubic root of 55966843 is about 382.5107132432.

The spelling of 55966843 in words is "fifty-five million, nine hundred sixty-six thousand, eight hundred forty-three".