55280166 has 32 divisors (see below), whose sum is σ = 113591808. Its totient is φ = 17927520.

The previous prime is 55280129. The next prime is 55280221. The reversal of 55280166 is 66108255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40995 + ... + 42321.

It is an arithmetic number, because the mean of its divisors is an integer number (3549744).

Almost surely, 2^55280166 is an apocalyptic number.

55280166 is an abundant number, since it is smaller than the sum of its proper divisors (58311642).

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

55280166 is a wasteful number, since it uses less digits than its factorization.

55280166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 55280166 is about 7435.0632815061. The cubic root of 55280166 is about 380.9398848396.

The spelling of 55280166 in words is "fifty-five million, two hundred eighty thousand, one hundred sixty-six".