55103440 has 60 divisors (see below), whose sum is σ = 149042916. Its totient is φ = 18891264.

The previous prime is 55103437. The next prime is 55103449. The reversal of 55103440 is 4430155.

55103440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8809024 + 46294416 = 2968^2 + 6804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55103449) 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 11 ways as a sum of consecutive naturals, for example, 3109 + ... + 10948.

Almost surely, 2^55103440 is an apocalyptic number.

It is an amenable number.

55103440 is an abundant number, since it is smaller than the sum of its proper divisors (93939476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55103440 is a wasteful number, since it uses less digits than its factorization.

55103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14084 (or 14071 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55103440 is about 7423.1691345409. The cubic root of 55103440 is about 380.5335073174.

Adding to 55103440 its reverse (4430155), we get a palindrome (59533595).

The spelling of 55103440 in words is "fifty-five million, one hundred three thousand, four hundred forty".