155145 has 8 divisors (see below), whose sum is σ = 248256. Its totient is φ = 82736.

The previous prime is 155137. The next prime is 155153. The reversal of 155145 is 541551.

It is an interprime number because it is at equal distance from previous prime (155137) and next prime (155153).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155145 - 2³ = 155137 is a prime.

It is a Curzon number.

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 155145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5157 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (31032).

2¹⁵⁵¹⁴⁵ is an apocalyptic number.

155145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155145 is a deficient number, since it is larger than the sum of its proper divisors (93111).

155145 is a wasteful number, since it uses less digits than its factorization.

155145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351.

The product of its digits is 500, while the sum is 21.

The square root of 155145 is about 393.8845008375. The cubic root of 155145 is about 53.7335987456.

Adding to 155145 its reverse (541551), we get a palindrome (696696).

It can be divided in two parts, 1551 and 45, that added together give a triangular number (1596 = T₅₆).

The spelling of 155145 in words is "one hundred fifty-five thousand, one hundred forty-five".