155277265 has 32 divisors (see below), whose sum is σ = 221760000. Its totient is φ = 102885120.

The previous prime is 155277263. The next prime is 155277293. The reversal of 155277265 is 562772551.

It is not a de Polignac number, because 155277265 - 2¹ = 155277263 is a prime.

It is a super-2 number, since 2×155277265² = 48222058051760450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155277263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55111 + ... + 57859.

It is an arithmetic number, because the mean of its divisors is an integer number (6930000).

Almost surely, 2^155277265 is an apocalyptic number.

It is an amenable number.

155277265 is a deficient number, since it is larger than the sum of its proper divisors (66482735).

155277265 is a wasteful number, since it uses less digits than its factorization.

155277265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857.

The product of its digits is 147000, while the sum is 40.

The square root of 155277265 is about 12461.0298531060. The cubic root of 155277265 is about 537.4886415483.

The spelling of 155277265 in words is "one hundred fifty-five million, two hundred seventy-seven thousand, two hundred sixty-five".