55943873 has 2 divisors, whose sum is σ = 55943874. Its totient is φ = 55943872.

The previous prime is 55943869. The next prime is 55943879. The reversal of 55943873 is 37834955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29235649 + 26708224 = 5407^2 + 5168^2 .

It is a cyclic number.

It is not a de Polignac number, because 55943873 - 2² = 55943869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55943879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27971936 + 27971937.

It is an arithmetic number, because the mean of its divisors is an integer number (27971937).

Almost surely, 2^55943873 is an apocalyptic number.

It is an amenable number.

55943873 is a deficient number, since it is larger than the sum of its proper divisors (1).

55943873 is an equidigital number, since it uses as much as digits as its factorization.

55943873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 55943873 is about 7479.5636904836. The cubic root of 55943873 is about 382.4583758656.

The spelling of 55943873 in words is "fifty-five million, nine hundred forty-three thousand, eight hundred seventy-three".