55321911 has 6 divisors (see below), whose sum is σ = 79909440. Its totient is φ = 36881268.

The previous prime is 55321909. The next prime is 55321991. The reversal of 55321911 is 11912355.

55321911 is a `hidden beast` number, since 553 + 21 + 91 + 1 = 666.

55321911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55321911 - 2¹ = 55321909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55321991) 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 in 5 ways as a sum of consecutive naturals, for example, 3073431 + ... + 3073448.

It is an arithmetic number, because the mean of its divisors is an integer number (13318240).

Almost surely, 2^55321911 is an apocalyptic number.

55321911 is a deficient number, since it is larger than the sum of its proper divisors (24587529).

55321911 is a wasteful number, since it uses less digits than its factorization.

55321911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6146885 (or 6146882 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

The square root of 55321911 is about 7437.8700580206. The cubic root of 55321911 is about 381.0357500502.

The spelling of 55321911 in words is "fifty-five million, three hundred twenty-one thousand, nine hundred eleven".