55547047 has 8 divisors (see below), whose sum is σ = 58037760. Its totient is φ = 53062680.

The previous prime is 55546999. The next prime is 55547057. The reversal of 55547047 is 74074555.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55547047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55546997 and 55547015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55547057) 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, 29422 + ... + 31252.

It is an arithmetic number, because the mean of its divisors is an integer number (7254720).

Almost surely, 2^55547047 is an apocalyptic number.

55547047 is a deficient number, since it is larger than the sum of its proper divisors (2490713).

55547047 is a wasteful number, since it uses less digits than its factorization.

55547047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173.

The product of its (nonzero) digits is 98000, while the sum is 37.

The square root of 55547047 is about 7452.9891318853. The cubic root of 55547047 is about 381.5519334604.

The spelling of 55547047 in words is "fifty-five million, five hundred forty-seven thousand, forty-seven".