155255145 has 32 divisors (see below), whose sum is σ = 258424320. Its totient is φ = 79522560.

The previous prime is 155255143. The next prime is 155255153. The reversal of 155255145 is 541552551.

It is not a de Polignac number, because 155255145 - 2¹ = 155255143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155255141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42075 + ... + 45615.

It is an arithmetic number, because the mean of its divisors is an integer number (8075760).

Almost surely, 2^155255145 is an apocalyptic number.

155255145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155255145 is a deficient number, since it is larger than the sum of its proper divisors (103169175).

155255145 is a wasteful number, since it uses less digits than its factorization.

155255145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665.

The product of its digits is 25000, while the sum is 33.

The square root of 155255145 is about 12460.1422544046. The cubic root of 155255145 is about 537.4631177144.

The spelling of 155255145 in words is "one hundred fifty-five million, two hundred fifty-five thousand, one hundred forty-five".