55546447 has 4 divisors (see below), whose sum is σ = 60596136. Its totient is φ = 50496760.

The previous prime is 55546427. The next prime is 55546453. The reversal of 55546447 is 74464555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55546447 - 2¹⁹ = 55022159 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55546427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2524828 + ... + 2524849.

It is an arithmetic number, because the mean of its divisors is an integer number (15149034).

Almost surely, 2^55546447 is an apocalyptic number.

55546447 is a deficient number, since it is larger than the sum of its proper divisors (5049689).

55546447 is a wasteful number, since it uses less digits than its factorization.

55546447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049688.

The product of its digits is 336000, while the sum is 40.

The square root of 55546447 is about 7452.9488794705. The cubic root of 55546447 is about 381.5505596581.

The spelling of 55546447 in words is "fifty-five million, five hundred forty-six thousand, four hundred forty-seven".