155181255 has 32 divisors (see below), whose sum is σ = 254025408. Its totient is φ = 80870400.

The previous prime is 155181223. The next prime is 155181289. The reversal of 155181255 is 552181551.

It is not a de Polignac number, because 155181255 - 2⁵ = 155181223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165147 + ... + 166083.

It is an arithmetic number, because the mean of its divisors is an integer number (7938294).

Almost surely, 2^155181255 is an apocalyptic number.

155181255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155181255 is a deficient number, since it is larger than the sum of its proper divisors (98844153).

155181255 is a wasteful number, since it uses less digits than its factorization.

155181255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187.

The product of its digits is 10000, while the sum is 33.

The square root of 155181255 is about 12457.1768471030. The cubic root of 155181255 is about 537.3778399144.

The spelling of 155181255 in words is "one hundred fifty-five million, one hundred eighty-one thousand, two hundred fifty-five".