155908 has 6 divisors (see below), whose sum is σ = 272846. Its totient is φ = 77952.

The previous prime is 155893. The next prime is 155921. The reversal of 155908 is 809551.

It can be written as a sum of positive squares in only one way, i.e., 97344 + 58564 = 312^2 + 242^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19485 + ... + 19492.

2¹⁵⁵⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

155908 is a deficient number, since it is larger than the sum of its proper divisors (116938).

155908 is a wasteful number, since it uses less digits than its factorization.

155908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38981 (or 38979 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 155908 is about 394.8518709592. The cubic root of 155908 is about 53.8215416561.

The spelling of 155908 in words is "one hundred fifty-five thousand, nine hundred eight".