155009806 has 16 divisors (see below), whose sum is σ = 269373024. Its totient is φ = 65522304.

The previous prime is 155009801. The next prime is 155009821. The reversal of 155009806 is 608900551.

155009806 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155009801) 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 7 ways as a sum of consecutive naturals, for example, 74815 + ... + 76858.

It is an arithmetic number, because the mean of its divisors is an integer number (16835814).

Almost surely, 2^155009806 is an apocalyptic number.

155009806 is a deficient number, since it is larger than the sum of its proper divisors (114363218).

155009806 is a wasteful number, since it uses less digits than its factorization.

155009806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151755.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 155009806 is about 12450.2934101972. The cubic root of 155009806 is about 537.1798631581.

The spelling of 155009806 in words is "one hundred fifty-five million, nine thousand, eight hundred six".