55166061 has 4 divisors (see below), whose sum is σ = 73554752. Its totient is φ = 36777372.

The previous prime is 55166053. The next prime is 55166087. The reversal of 55166061 is 16066155.

55166061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55166061 - 2³ = 55166053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166011) 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 3 ways as a sum of consecutive naturals, for example, 9194341 + ... + 9194346.

It is an arithmetic number, because the mean of its divisors is an integer number (18388688).

Almost surely, 2^55166061 is an apocalyptic number.

It is an amenable number.

55166061 is a deficient number, since it is larger than the sum of its proper divisors (18388691).

55166061 is a wasteful number, since it uses less digits than its factorization.

55166061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18388690.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 55166061 is about 7427.3858792983. The cubic root of 55166061 is about 380.6776021789.

The spelling of 55166061 in words is "fifty-five million, one hundred sixty-six thousand, sixty-one".