155000005 has 8 divisors (see below), whose sum is σ = 195789600. Its totient is φ = 117473616.

The previous prime is 154999981. The next prime is 155000023. The reversal of 155000005 is 500000551.

155000005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 155000005 - 2⁵ = 154999973 is a prime.

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, 815695 + ... + 815884.

It is an arithmetic number, because the mean of its divisors is an integer number (24473700).

Almost surely, 2^155000005 is an apocalyptic number.

It is an amenable number.

155000005 is a deficient number, since it is larger than the sum of its proper divisors (40789595).

155000005 is a wasteful number, since it uses less digits than its factorization.

155000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631603.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 155000005 is about 12449.8997987936. The cubic root of 155000005 is about 537.1685412705.

Adding to 155000005 its reverse (500000551), we get a palindrome (655000556).

The spelling of 155000005 in words is "one hundred fifty-five million, five", and thus it is an aban number.