55921093 has 2 divisors, whose sum is σ = 55921094. Its totient is φ = 55921092.

The previous prime is 55921051. The next prime is 55921133. The reversal of 55921093 is 39012955.

It is a happy number.

55921093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51523684 + 4397409 = 7178^2 + 2097^2 .

It is a cyclic number.

It is not a de Polignac number, because 55921093 - 2²⁵ = 22366661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55921013) 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, 27960546 + 27960547.

It is an arithmetic number, because the mean of its divisors is an integer number (27960547).

Almost surely, 2^55921093 is an apocalyptic number.

It is an amenable number.

55921093 is a deficient number, since it is larger than the sum of its proper divisors (1).

55921093 is an equidigital number, since it uses as much as digits as its factorization.

55921093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 55921093 is about 7478.0407193328. The cubic root of 55921093 is about 382.4064572541.

The spelling of 55921093 in words is "fifty-five million, nine hundred twenty-one thousand, ninety-three".