55040416 has 24 divisors (see below), whose sum is σ = 114065280. Its totient is φ = 26071488.

The previous prime is 55040411. The next prime is 55040429. The reversal of 55040416 is 61404055.

55040416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55040411) 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, 44656 + ... + 45871.

It is an arithmetic number, because the mean of its divisors is an integer number (4752720).

Almost surely, 2^55040416 is an apocalyptic number.

It is an amenable number.

55040416 is an abundant number, since it is smaller than the sum of its proper divisors (59024864).

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

55040416 is a wasteful number, since it uses less digits than its factorization.

55040416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90556 (or 90548 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 55040416 is about 7418.9228328646. The cubic root of 55040416 is about 380.3883748603.

The spelling of 55040416 in words is "fifty-five million, forty thousand, four hundred sixteen".