55056571 has 2 divisors, whose sum is σ = 55056572. Its totient is φ = 55056570.

The previous prime is 55056569. The next prime is 55056577. The reversal of 55056571 is 17565055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55056571 - 2¹ = 55056569 is a prime.

Together with 55056569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55056577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27528285 + 27528286.

It is an arithmetic number, because the mean of its divisors is an integer number (27528286).

Almost surely, 2^55056571 is an apocalyptic number.

55056571 is a deficient number, since it is larger than the sum of its proper divisors (1).

55056571 is an equidigital number, since it uses as much as digits as its factorization.

55056571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 55056571 is about 7420.0115229021. The cubic root of 55056571 is about 380.4255873520.

It can be divided in two parts, 550 and 56571, that added together give a square (57121 = 239²).

The spelling of 55056571 in words is "fifty-five million, fifty-six thousand, five hundred seventy-one".