55927409 has 2 divisors, whose sum is σ = 55927410. Its totient is φ = 55927408.

The previous prime is 55927397. The next prime is 55927439. The reversal of 55927409 is 90472955.

55927409 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., 47679025 + 8248384 = 6905^2 + 2872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55927409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55927439) 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, 27963704 + 27963705.

It is an arithmetic number, because the mean of its divisors is an integer number (27963705).

Almost surely, 2^55927409 is an apocalyptic number.

It is an amenable number.

55927409 is a deficient number, since it is larger than the sum of its proper divisors (1).

55927409 is an equidigital number, since it uses as much as digits as its factorization.

55927409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 55927409 is about 7478.4630105390. The cubic root of 55927409 is about 382.4208536600.

The spelling of 55927409 in words is "fifty-five million, nine hundred twenty-seven thousand, four hundred nine".