55020571 has 4 divisors (see below), whose sum is σ = 55281544. Its totient is φ = 54759600.

The previous prime is 55020557. The next prime is 55020583. The reversal of 55020571 is 17502055.

It is a happy number.

55020571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55020571 - 2¹³ = 55012379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55020271) 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 3 ways as a sum of consecutive naturals, for example, 130170 + ... + 130591.

It is an arithmetic number, because the mean of its divisors is an integer number (13820386).

Almost surely, 2^55020571 is an apocalyptic number.

55020571 is a deficient number, since it is larger than the sum of its proper divisors (260973).

55020571 is a wasteful number, since it uses less digits than its factorization.

55020571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260972.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 55020571 is about 7417.5852539759. The cubic root of 55020571 is about 380.3426526118.

The spelling of 55020571 in words is "fifty-five million, twenty thousand, five hundred seventy-one".