55244407 has 8 divisors (see below), whose sum is σ = 58884192. Its totient is φ = 51648000.

The previous prime is 55244401. The next prime is 55244417. The reversal of 55244407 is 70444255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55244407 - 2¹¹ = 55242359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55244401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8194 + ... + 13327.

It is an arithmetic number, because the mean of its divisors is an integer number (7360524).

Almost surely, 2^55244407 is an apocalyptic number.

55244407 is a deficient number, since it is larger than the sum of its proper divisors (3639785).

55244407 is a wasteful number, since it uses less digits than its factorization.

55244407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21689.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 55244407 is about 7432.6581382437. The cubic root of 55244407 is about 380.8577277804.

The spelling of 55244407 in words is "fifty-five million, two hundred forty-four thousand, four hundred seven".