55005055571 has 2 divisors, whose sum is σ = 55005055572. Its totient is φ = 55005055570.

The previous prime is 55005055531. The next prime is 55005055583. The reversal of 55005055571 is 17555050055.

55005055571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55005055571 - 2¹⁸ = 55004793427 is a prime.

It is a super-2 number, since 2×55005055571² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55005055531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502527785 + 27502527786.

It is an arithmetic number, because the mean of its divisors is an integer number (27502527786).

Almost surely, 2^55005055571 is an apocalyptic number.

55005055571 is a deficient number, since it is larger than the sum of its proper divisors (1).

55005055571 is an equidigital number, since it uses as much as digits as its factorization.

55005055571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109375, while the sum is 38.

The spelling of 55005055571 in words is "fifty-five billion, five million, fifty-five thousand, five hundred seventy-one".