55443901 has 2 divisors, whose sum is σ = 55443902. Its totient is φ = 55443900.

The previous prime is 55443887. The next prime is 55443923. The reversal of 55443901 is 10934455.

55443901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 15876 = 7445^2 + 126^2 .

It is a cyclic number.

It is not a de Polignac number, because 55443901 - 2¹¹ = 55441853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55443991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27721950 + 27721951.

It is an arithmetic number, because the mean of its divisors is an integer number (27721951).

Almost surely, 2^55443901 is an apocalyptic number.

It is an amenable number.

55443901 is a deficient number, since it is larger than the sum of its proper divisors (1).

55443901 is an equidigital number, since it uses as much as digits as its factorization.

55443901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 55443901 is about 7446.0661426017. The cubic root of 55443901 is about 381.3156176227.

The spelling of 55443901 in words is "fifty-five million, four hundred forty-three thousand, nine hundred one".