55224404 has 6 divisors (see below), whose sum is σ = 96642714. Its totient is φ = 27612200.

The previous prime is 55224401. The next prime is 55224451. The reversal of 55224404 is 40442255.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 12974404 = 6500^2 + 3602^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55224401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6903047 + ... + 6903054.

It is an arithmetic number, because the mean of its divisors is an integer number (16107119).

Almost surely, 2^55224404 is an apocalyptic number.

It is an amenable number.

55224404 is a deficient number, since it is larger than the sum of its proper divisors (41418310).

55224404 is a wasteful number, since it uses less digits than its factorization.

55224404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13806105 (or 13806103 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 55224404 is about 7431.3124009155. The cubic root of 55224404 is about 380.8117550010.

Adding to 55224404 its reverse (40442255), we get a palindrome (95666659).

The spelling of 55224404 in words is "fifty-five million, two hundred twenty-four thousand, four hundred four".