155000065 has 16 divisors (see below), whose sum is σ = 204886656. Its totient is φ = 111628800.

The previous prime is 155000063. The next prime is 155000107. The reversal of 155000065 is 560000551.

It is not a de Polignac number, because 155000065 - 2¹ = 155000063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155000063) 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, 8016 + ... + 19345.

It is an arithmetic number, because the mean of its divisors is an integer number (12805416).

Almost surely, 2^155000065 is an apocalyptic number.

It is an amenable number.

155000065 is a deficient number, since it is larger than the sum of its proper divisors (49886591).

155000065 is a wasteful number, since it uses less digits than its factorization.

155000065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27480.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 155000065 is about 12449.9022084513. The cubic root of 155000065 is about 537.1686105825.

The spelling of 155000065 in words is "one hundred fifty-five million, sixty-five", and thus it is an aban number.