55663211 has 8 divisors (see below), whose sum is σ = 56292864. Its totient is φ = 55036800.

The previous prime is 55663193. The next prime is 55663213. The reversal of 55663211 is 11236655.

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 55663211 - 2⁶ = 55663147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55663213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50381 + ... + 51473.

It is an arithmetic number, because the mean of its divisors is an integer number (7036608).

Almost surely, 2^55663211 is an apocalyptic number.

55663211 is a deficient number, since it is larger than the sum of its proper divisors (629653).

55663211 is a wasteful number, since it uses less digits than its factorization.

55663211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621.

The product of its digits is 5400, while the sum is 29.

The square root of 55663211 is about 7460.7781765711. The cubic root of 55663211 is about 381.8177245940.

Adding to 55663211 its reverse (11236655), we get a palindrome (66899866).

The spelling of 55663211 in words is "fifty-five million, six hundred sixty-three thousand, two hundred eleven".