55466321 has 4 divisors (see below), whose sum is σ = 55483044. Its totient is φ = 55449600.

The previous prime is 55466303. The next prime is 55466353. The reversal of 55466321 is 12366455.

55466321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12366455 = 5 ⋅2473291.

It can be written as a sum of positive squares in 2 ways, for example, as 15713296 + 39753025 = 3964^2 + 6305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55466321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55466381) 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 3 ways as a sum of consecutive naturals, for example, 1520 + ... + 10641.

It is an arithmetic number, because the mean of its divisors is an integer number (13870761).

Almost surely, 2^55466321 is an apocalyptic number.

It is an amenable number.

55466321 is a deficient number, since it is larger than the sum of its proper divisors (16723).

55466321 is a wasteful number, since it uses less digits than its factorization.

55466321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16722.

The product of its digits is 21600, while the sum is 32.

The square root of 55466321 is about 7447.5714833763. The cubic root of 55466321 is about 381.3670085717.

The spelling of 55466321 in words is "fifty-five million, four hundred sixty-six thousand, three hundred twenty-one".