55244647 has 8 divisors (see below), whose sum is σ = 58410800. Its totient is φ = 52104384.

The previous prime is 55244641. The next prime is 55244659. The reversal of 55244647 is 74644255.

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

It is a de Polignac number, because none of the positive numbers 2^k-55244647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55244641) 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, 1998 + ... + 10699.

It is an arithmetic number, because the mean of its divisors is an integer number (7301350).

Almost surely, 2^55244647 is an apocalyptic number.

55244647 is a deficient number, since it is larger than the sum of its proper divisors (3166153).

55244647 is a wasteful number, since it uses less digits than its factorization.

55244647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12945.

The product of its digits is 134400, while the sum is 37.

The square root of 55244647 is about 7432.6742831904. The cubic root of 55244647 is about 380.8582793036.

The spelling of 55244647 in words is "fifty-five million, two hundred forty-four thousand, six hundred forty-seven".