55660043 has 2 divisors, whose sum is σ = 55660044. Its totient is φ = 55660042.

The previous prime is 55660039. The next prime is 55660051. The reversal of 55660043 is 34006655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55660043 - 2² = 55660039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55659988 and 55660015.

It is not a weakly prime, because it can be changed into another prime (55660013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27830021 + 27830022.

It is an arithmetic number, because the mean of its divisors is an integer number (27830022).

Almost surely, 2^55660043 is an apocalyptic number.

55660043 is a deficient number, since it is larger than the sum of its proper divisors (1).

55660043 is an equidigital number, since it uses as much as digits as its factorization.

55660043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 55660043 is about 7460.5658632573. The cubic root of 55660043 is about 381.8104809019.

Adding to 55660043 its reverse (34006655), we get a palindrome (89666698).

The spelling of 55660043 in words is "fifty-five million, six hundred sixty thousand, forty-three".