55717571 has 16 divisors (see below), whose sum is σ = 70791168. Its totient is φ = 42660000.

The previous prime is 55717549. The next prime is 55717577. The reversal of 55717571 is 17571755.

55717571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55717571 - 2¹⁸ = 55455427 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (55717577) 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, 7055 + ... + 12696.

It is an arithmetic number, because the mean of its divisors is an integer number (4424448).

Almost surely, 2^55717571 is an apocalyptic number.

55717571 is a deficient number, since it is larger than the sum of its proper divisors (15073597).

55717571 is a wasteful number, since it uses less digits than its factorization.

55717571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19802.

The product of its digits is 42875, while the sum is 38.

The square root of 55717571 is about 7464.4203391824. The cubic root of 55717571 is about 381.9419769697.

The spelling of 55717571 in words is "fifty-five million, seven hundred seventeen thousand, five hundred seventy-one".