55069791 has 16 divisors (see below), whose sum is σ = 84455424. Its totient is φ = 31266144.

The previous prime is 55069789. The next prime is 55069823. The reversal of 55069791 is 19796055.

55069791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55069791 - 2¹ = 55069789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55069711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5055 + ... + 11648.

It is an arithmetic number, because the mean of its divisors is an integer number (5278464).

Almost surely, 2^55069791 is an apocalyptic number.

55069791 is a deficient number, since it is larger than the sum of its proper divisors (29385633).

55069791 is a wasteful number, since it uses less digits than its factorization.

55069791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16870.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 55069791 is about 7420.9023036286. The cubic root of 55069791 is about 380.4560337558.

The spelling of 55069791 in words is "fifty-five million, sixty-nine thousand, seven hundred ninety-one".