55071047 has 4 divisors (see below), whose sum is σ = 55421976. Its totient is φ = 54720120.

The previous prime is 55071043. The next prime is 55071067. The reversal of 55071047 is 74017055.

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 55071047 - 2² = 55071043 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 (55071043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175229 + ... + 175542.

It is an arithmetic number, because the mean of its divisors is an integer number (13855494).

Almost surely, 2^55071047 is an apocalyptic number.

55071047 is a deficient number, since it is larger than the sum of its proper divisors (350929).

55071047 is a wasteful number, since it uses less digits than its factorization.

55071047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350928.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 55071047 is about 7420.9869289738. The cubic root of 55071047 is about 380.4589261410.

The spelling of 55071047 in words is "fifty-five million, seventy-one thousand, forty-seven".