55553211 has 36 divisors (see below), whose sum is σ = 97420752. Its totient is φ = 30358944.

The previous prime is 55553203. The next prime is 55553231. The reversal of 55553211 is 11235555.

It is not a de Polignac number, because 55553211 - 2³ = 55553203 is a prime.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55553231) 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 35 ways as a sum of consecutive naturals, for example, 7405 + ... + 12881.

It is an arithmetic number, because the mean of its divisors is an integer number (2706132).

Almost surely, 2^55553211 is an apocalyptic number.

55553211 is a deficient number, since it is larger than the sum of its proper divisors (41867541).

55553211 is a wasteful number, since it uses less digits than its factorization.

55553211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5520 (or 5510 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 55553211 is about 7453.4026457719. The cubic root of 55553211 is about 381.5660464167.

Adding to 55553211 its reverse (11235555), we get a palindrome (66788766).

The spelling of 55553211 in words is "fifty-five million, five hundred fifty-three thousand, two hundred eleven".