55047817 has 8 divisors (see below), whose sum is σ = 60177600. Its totient is φ = 49938960.

The previous prime is 55047799. The next prime is 55047821. The reversal of 55047817 is 71874055.

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 55047817 - 2¹¹ = 55045769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55047827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559 + ... + 10507.

It is an arithmetic number, because the mean of its divisors is an integer number (7522200).

Almost surely, 2^55047817 is an apocalyptic number.

It is an amenable number.

55047817 is a deficient number, since it is larger than the sum of its proper divisors (5129783).

55047817 is a wasteful number, since it uses less digits than its factorization.

55047817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10463.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 55047817 is about 7419.4216081848. The cubic root of 55047817 is about 380.4054237151.

The spelling of 55047817 in words is "fifty-five million, forty-seven thousand, eight hundred seventeen".