155212868 has 12 divisors (see below), whose sum is σ = 271852140. Its totient is φ = 77540832.

The previous prime is 155212867. The next prime is 155212949. The reversal of 155212868 is 868212551.

It can be written as a sum of positive squares in 2 ways, for example, as 122058304 + 33154564 = 11048^2 + 5758^2 .

It is not an unprimeable number, because it can be changed into a prime (155212867) 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, 10871 + ... + 20702.

It is an arithmetic number, because the mean of its divisors is an integer number (22654345).

Almost surely, 2^155212868 is an apocalyptic number.

It is an amenable number.

155212868 is a deficient number, since it is larger than the sum of its proper divisors (116639272).

155212868 is a wasteful number, since it uses less digits than its factorization.

155212868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32806 (or 32804 counting only the distinct ones).

The product of its digits is 38400, while the sum is 38.

The square root of 155212868 is about 12458.4456494380. The cubic root of 155212868 is about 537.4143283683.

The spelling of 155212868 in words is "one hundred fifty-five million, two hundred twelve thousand, eight hundred sixty-eight".