55327289 has 4 divisors (see below), whose sum is σ = 55636560. Its totient is φ = 55018020.

The previous prime is 55327249. The next prime is 55327301. The reversal of 55327289 is 98272355.

55327289 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55327289 - 2²⁴ = 38550073 is a prime.

It is a super-2 number, since 2×55327289² = 6122217816179042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55327249) 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, 154367 + ... + 154724.

It is an arithmetic number, because the mean of its divisors is an integer number (13909140).

Almost surely, 2^55327289 is an apocalyptic number.

It is an amenable number.

55327289 is a deficient number, since it is larger than the sum of its proper divisors (309271).

55327289 is a wasteful number, since it uses less digits than its factorization.

55327289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309270.

The product of its digits is 151200, while the sum is 41.

The square root of 55327289 is about 7438.2315774652. The cubic root of 55327289 is about 381.0480968391.

It can be divided in two parts, 5532 and 7289, that added together give a palindrome (12821).

The spelling of 55327289 in words is "fifty-five million, three hundred twenty-seven thousand, two hundred eighty-nine".