55563211 has 8 divisors (see below), whose sum is σ = 60955200. Its totient is φ = 50228040.

The previous prime is 55563203. The next prime is 55563223. The reversal of 55563211 is 11236555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55563211 - 2³ = 55563203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55563211.

It is not an unprimeable number, because it can be changed into a prime (55563311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12141 + ... + 16078.

It is an arithmetic number, because the mean of its divisors is an integer number (7619400).

Almost surely, 2^55563211 is an apocalyptic number.

55563211 is a deficient number, since it is larger than the sum of its proper divisors (5391989).

55563211 is a wasteful number, since it uses less digits than its factorization.

55563211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28409.

The product of its digits is 4500, while the sum is 28.

The square root of 55563211 is about 7454.0734501345. The cubic root of 55563211 is about 381.5889399720.

Adding to 55563211 its reverse (11236555), we get a palindrome (66799766).

The spelling of 55563211 in words is "fifty-five million, five hundred sixty-three thousand, two hundred eleven".