155080905 has 16 divisors (see below), whose sum is σ = 283576704. Its totient is φ = 70894080.

The previous prime is 155080903. The next prime is 155080909. The reversal of 155080905 is 509080551.

155080905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155080905 - 2¹ = 155080903 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155080903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738376 + ... + 738585.

It is an arithmetic number, because the mean of its divisors is an integer number (17723544).

Almost surely, 2^155080905 is an apocalyptic number.

155080905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155080905 is a deficient number, since it is larger than the sum of its proper divisors (128495799).

155080905 is a wasteful number, since it uses less digits than its factorization.

155080905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476976.

The product of its (nonzero) digits is 9000, while the sum is 33.

The square root of 155080905 is about 12453.1483970922. The cubic root of 155080905 is about 537.2619807871.

The spelling of 155080905 in words is "one hundred fifty-five million, eighty thousand, nine hundred five".