155005166 has 4 divisors (see below), whose sum is σ = 232507752. Its totient is φ = 77502582.

The previous prime is 155005163. The next prime is 155005183. The reversal of 155005166 is 661500551.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155005163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38751290 + ... + 38751293.

It is an arithmetic number, because the mean of its divisors is an integer number (58126938).

Almost surely, 2^155005166 is an apocalyptic number.

155005166 is a deficient number, since it is larger than the sum of its proper divisors (77502586).

155005166 is an equidigital number, since it uses as much as digits as its factorization.

155005166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77502585.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 155005166 is about 12450.1070678127. The cubic root of 155005166 is about 537.1745031973.

The spelling of 155005166 in words is "one hundred fifty-five million, five thousand, one hundred sixty-six".