155550066 has 32 divisors (see below), whose sum is σ = 360557568. Its totient is φ = 43816080.

The previous prime is 155550053. The next prime is 155550089. The reversal of 155550066 is 660055551.

155550066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 23100 + ... + 29063.

It is an arithmetic number, because the mean of its divisors is an integer number (11267424).

Almost surely, 2^155550066 is an apocalyptic number.

155550066 is an abundant number, since it is smaller than the sum of its proper divisors (205007502).

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

155550066 is a wasteful number, since it uses less digits than its factorization.

155550066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52246.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 155550066 is about 12471.9712154896. The cubic root of 155550066 is about 537.8032221674.

The spelling of 155550066 in words is "one hundred fifty-five million, five hundred fifty thousand, sixty-six".