55554817 has 2 divisors, whose sum is σ = 55554818. Its totient is φ = 55554816.

The previous prime is 55554773. The next prime is 55554847. The reversal of 55554817 is 71845555.

It is a happy number.

55554817 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., 41783296 + 13771521 = 6464^2 + 3711^2 .

It is a cyclic number.

It is not a de Polignac number, because 55554817 - 2¹⁹ = 55030529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55554817.

It is not a weakly prime, because it can be changed into another prime (55554847) 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, 27777408 + 27777409.

It is an arithmetic number, because the mean of its divisors is an integer number (27777409).

Almost surely, 2^55554817 is an apocalyptic number.

It is an amenable number.

55554817 is a deficient number, since it is larger than the sum of its proper divisors (1).

55554817 is an equidigital number, since it uses as much as digits as its factorization.

55554817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 140000, while the sum is 40.

The square root of 55554817 is about 7453.5103810218. The cubic root of 55554817 is about 381.5697233068.

The spelling of 55554817 in words is "fifty-five million, five hundred fifty-four thousand, eight hundred seventeen".