155273265 has 48 divisors (see below), whose sum is σ = 317531136. Its totient is φ = 68688000.

The previous prime is 155273231. The next prime is 155273269. The reversal of 155273265 is 562372551.

It is not a de Polignac number, because 155273265 - 2⁷ = 155273137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155273269) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1815 + ... + 17715.

It is an arithmetic number, because the mean of its divisors is an integer number (6615232).

Almost surely, 2^155273265 is an apocalyptic number.

155273265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155273265 is an abundant number, since it is smaller than the sum of its proper divisors (162257871).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155273265 is a wasteful number, since it uses less digits than its factorization.

155273265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15950 (or 15947 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 155273265 is about 12460.8693516945. The cubic root of 155273265 is about 537.4840262064.

The spelling of 155273265 in words is "one hundred fifty-five million, two hundred seventy-three thousand, two hundred sixty-five".