155906855 has 8 divisors (see below), whose sum is σ = 201479712. Its totient is φ = 115131168.

The previous prime is 155906827. The next prime is 155906869. The reversal of 155906855 is 558609551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155906855 - 2¹² = 155902759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199219 + ... + 1199348.

It is an arithmetic number, because the mean of its divisors is an integer number (25184964).

Almost surely, 2^155906855 is an apocalyptic number.

155906855 is a deficient number, since it is larger than the sum of its proper divisors (45572857).

155906855 is a wasteful number, since it uses less digits than its factorization.

155906855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398585.

The product of its (nonzero) digits is 270000, while the sum is 44.

The square root of 155906855 is about 12486.2666558103. The cubic root of 155906855 is about 538.2140989933.

The spelling of 155906855 in words is "one hundred fifty-five million, nine hundred six thousand, eight hundred fifty-five".