55223012 has 24 divisors (see below), whose sum is σ = 104513472. Its totient is φ = 25380000.

The previous prime is 55223009. The next prime is 55223027. The reversal of 55223012 is 21032255.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10937 + ... + 15167.

It is an arithmetic number, because the mean of its divisors is an integer number (4354728).

Almost surely, 2^55223012 is an apocalyptic number.

55223012 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55223012 is a deficient number, since it is larger than the sum of its proper divisors (49290460).

55223012 is a wasteful number, since it uses less digits than its factorization.

55223012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499 (or 4497 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 55223012 is about 7431.2187425751. The cubic root of 55223012 is about 380.8085553624.

Adding to 55223012 its reverse (21032255), we get a palindrome (76255267).

The spelling of 55223012 in words is "fifty-five million, two hundred twenty-three thousand, twelve".