55223011 has 4 divisors (see below), whose sum is σ = 55242400. Its totient is φ = 55203624.

The previous prime is 55223009. The next prime is 55223027. The reversal of 55223011 is 11032255.

55223011 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.

It is a cyclic number.

It is not a de Polignac number, because 55223011 - 2¹ = 55223009 is a prime.

It is a super-2 number, since 2×55223011² = 6099161887812242, which contains 22 as substring.

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 55223011.

It is not an unprimeable number, because it can be changed into a prime (55223071) 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, 4491 + ... + 11428.

It is an arithmetic number, because the mean of its divisors is an integer number (13810600).

Almost surely, 2^55223011 is an apocalyptic number.

55223011 is a deficient number, since it is larger than the sum of its proper divisors (19389).

55223011 is a wasteful number, since it uses less digits than its factorization.

55223011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19388.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 55223011 is about 7431.2186752914. The cubic root of 55223011 is about 380.8085530638.

Adding to 55223011 its reverse (11032255), we get a palindrome (66255266).

The spelling of 55223011 in words is "fifty-five million, two hundred twenty-three thousand, eleven".