55223311 has 12 divisors (see below), whose sum is σ = 65371096. Its totient is φ = 46339920.

The previous prime is 55223251. The next prime is 55223321. The reversal of 55223311 is 11332255.

It is not a de Polignac number, because 55223311 - 2⁹ = 55222799 is a prime.

It is a super-2 number, since 2×55223311² = 6099228155605442, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55223321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15981 + ... + 19126.

Almost surely, 2^55223311 is an apocalyptic number.

55223311 is a deficient number, since it is larger than the sum of its proper divisors (10147785).

55223311 is a wasteful number, since it uses less digits than its factorization.

55223311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35142 (or 35131 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 55223311 is about 7431.2388603785. The cubic root of 55223311 is about 380.8092426456.

Adding to 55223311 its reverse (11332255), we get a palindrome (66555566).

The spelling of 55223311 in words is "fifty-five million, two hundred twenty-three thousand, three hundred eleven".