155163205 has 4 divisors (see below), whose sum is σ = 186195852. Its totient is φ = 124130560.

The previous prime is 155163193. The next prime is 155163209. The reversal of 155163205 is 502361551.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22591009 + 132572196 = 4753^2 + 11514^2 .

It is not a de Polignac number, because 155163205 - 2¹⁷ = 155032133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155163209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15516316 + ... + 15516325.

It is an arithmetic number, because the mean of its divisors is an integer number (46548963).

Almost surely, 2^155163205 is an apocalyptic number.

It is an amenable number.

155163205 is a deficient number, since it is larger than the sum of its proper divisors (31032647).

155163205 is an equidigital number, since it uses as much as digits as its factorization.

155163205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31032646.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 155163205 is about 12456.4523440665. The cubic root of 155163205 is about 537.3570039655.

It can be divided in two parts, 15516 and 3205, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 155163205 in words is "one hundred fifty-five million, one hundred sixty-three thousand, two hundred five".