55020071 has 8 divisors (see below), whose sum is σ = 59265024. Its totient is φ = 50929560.

The previous prime is 55020061. The next prime is 55020089. The reversal of 55020071 is 17002055.

55020071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55020071 - 2¹⁰ = 55019047 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 (55020061) 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 7 ways as a sum of consecutive naturals, for example, 37871 + ... + 39296.

It is an arithmetic number, because the mean of its divisors is an integer number (7408128).

Almost surely, 2^55020071 is an apocalyptic number.

55020071 is a deficient number, since it is larger than the sum of its proper divisors (4244953).

55020071 is a wasteful number, since it uses less digits than its factorization.

55020071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77221.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 55020071 is about 7417.5515502085. The cubic root of 55020071 is about 380.3415004858.

The spelling of 55020071 in words is "fifty-five million, twenty thousand, seventy-one".