155292145 has 16 divisors (see below), whose sum is σ = 192403728. Its totient is φ = 120234240.

The previous prime is 155292143. The next prime is 155292169. The reversal of 155292145 is 541292551.

It can be written as a sum of positive squares in 8 ways, for example, as 76597504 + 78694641 = 8752^2 + 8871^2 .

It is not a de Polignac number, because 155292145 - 2¹ = 155292143 is a prime.

It is a Duffinian number.

Its product of digits (18000) is a multiple of the sum of its prime divisors (4500).

It is a self number, because there is not a number n which added to its sum of digits gives 155292145.

It is not an unprimeable number, because it can be changed into a prime (155292143) 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, 34315 + ... + 38575.

It is an arithmetic number, because the mean of its divisors is an integer number (12025233).

Almost surely, 2^155292145 is an apocalyptic number.

It is an amenable number.

155292145 is a deficient number, since it is larger than the sum of its proper divisors (37111583).

155292145 is a wasteful number, since it uses less digits than its factorization.

155292145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500.

The product of its digits is 18000, while the sum is 34.

The square root of 155292145 is about 12461.6269002085. The cubic root of 155292145 is about 537.5058099246.

The spelling of 155292145 in words is "one hundred fifty-five million, two hundred ninety-two thousand, one hundred forty-five".