55205166 has 32 divisors (see below), whose sum is σ = 113545728. Its totient is φ = 17884800.

The previous prime is 55205153. The next prime is 55205167. The reversal of 55205166 is 66150255.

It is a super-2 number, since 2×55205166² = 6095220706175112, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55205167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45366 + ... + 46566.

It is an arithmetic number, because the mean of its divisors is an integer number (3548304).

Almost surely, 2^55205166 is an apocalyptic number.

55205166 is an abundant number, since it is smaller than the sum of its proper divisors (58340562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55205166 is a wasteful number, since it uses less digits than its factorization.

55205166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 55205166 is about 7430.0179003822. The cubic root of 55205166 is about 380.7675299430.

The spelling of 55205166 in words is "fifty-five million, two hundred five thousand, one hundred sixty-six".