55943983 has 2 divisors, whose sum is σ = 55943984. Its totient is φ = 55943982.

The previous prime is 55943971. The next prime is 55944011. The reversal of 55943983 is 38934955.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55943983 - 2⁹ = 55943471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55941983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27971991 + 27971992.

It is an arithmetic number, because the mean of its divisors is an integer number (27971992).

Almost surely, 2^55943983 is an apocalyptic number.

55943983 is a deficient number, since it is larger than the sum of its proper divisors (1).

55943983 is an equidigital number, since it uses as much as digits as its factorization.

55943983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The square root of 55943983 is about 7479.5710438500. The cubic root of 55943983 is about 382.4586265358.

Subtracting from 55943983 its reverse (38934955), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 55943983 in words is "fifty-five million, nine hundred forty-three thousand, nine hundred eighty-three".