55166155 has 16 divisors (see below), whose sum is σ = 72605664. Its totient is φ = 39905280.

The previous prime is 55166147. The next prime is 55166179.

55166155 is nontrivially palindromic in base 10.

55166155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55166155 - 2³ = 55166147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55166155.

It is an unprimeable number.

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, 8017 + ... + 13213.

It is an arithmetic number, because the mean of its divisors is an integer number (4537854).

Almost surely, 2^55166155 is an apocalyptic number.

55166155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55166155 is a deficient number, since it is larger than the sum of its proper divisors (17439509).

55166155 is a wasteful number, since it uses less digits than its factorization.

55166155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406.

The product of its digits is 22500, while the sum is 34.

The square root of 55166155 is about 7427.3922072286. The cubic root of 55166155 is about 380.6778183969.

The spelling of 55166155 in words is "fifty-five million, one hundred sixty-six thousand, one hundred fifty-five".