55015166571 has 32 divisors (see below), whose sum is σ = 77058293760. Its totient is φ = 34881369600.

The previous prime is 55015166567. The next prime is 55015166617. The reversal of 55015166571 is 17566151055.

It is not a de Polignac number, because 55015166571 - 2² = 55015166567 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55015166551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 741846 + ... + 812628.

It is an arithmetic number, because the mean of its divisors is an integer number (2408071680).

Almost surely, 2^55015166571 is an apocalyptic number.

55015166571 is a deficient number, since it is larger than the sum of its proper divisors (22043127189).

55015166571 is a wasteful number, since it uses less digits than its factorization.

55015166571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70987.

The product of its (nonzero) digits is 157500, while the sum is 42.

The spelling of 55015166571 in words is "fifty-five billion, fifteen million, one hundred sixty-six thousand, five hundred seventy-one".