155305155 has 16 divisors (see below), whose sum is σ = 253776384. Its totient is φ = 81066720.

The previous prime is 155305141. The next prime is 155305229. The reversal of 155305155 is 551503551.

It is not a de Polignac number, because 155305155 - 2⁵ = 155305123 is a prime.

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, 109441 + ... + 110850.

It is an arithmetic number, because the mean of its divisors is an integer number (15861024).

Almost surely, 2^155305155 is an apocalyptic number.

155305155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155305155 is a deficient number, since it is larger than the sum of its proper divisors (98471229).

155305155 is a wasteful number, since it uses less digits than its factorization.

155305155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220346.

The product of its (nonzero) digits is 9375, while the sum is 30.

The square root of 155305155 is about 12462.1488917442. The cubic root of 155305155 is about 537.5208198173.

The spelling of 155305155 in words is "one hundred fifty-five million, three hundred five thousand, one hundred fifty-five".