145120155 has 16 divisors (see below), whose sum is σ = 232727040. Its totient is φ = 77219168.

The previous prime is 145120139. The next prime is 145120169. The reversal of 145120155 is 551021541.

It is a cyclic number.

It is not a de Polignac number, because 145120155 - 2⁴ = 145120139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4275 + ... + 17564.

It is an arithmetic number, because the mean of its divisors is an integer number (14545440).

Almost surely, 2^145120155 is an apocalyptic number.

145120155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145120155 is a deficient number, since it is larger than the sum of its proper divisors (87606885).

145120155 is a wasteful number, since it uses less digits than its factorization.

145120155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22290.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 145120155 is about 12046.5827104619. The cubic root of 145120155 is about 525.5038609435.

Adding to 145120155 its reverse (551021541), we get a palindrome (696141696).

The spelling of 145120155 in words is "one hundred forty-five million, one hundred twenty thousand, one hundred fifty-five".