155411 has 8 divisors (see below), whose sum is σ = 168480. Its totient is φ = 142912.

The previous prime is 155399. The next prime is 155413. The reversal of 155411 is 114551.

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

It is not a de Polignac number, because 155411 - 2¹⁰ = 154387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155411.

It is not an unprimeable number, because it can be changed into a prime (155413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551 + ... + 783.

It is an arithmetic number, because the mean of its divisors is an integer number (21060).

2¹⁵⁵⁴¹¹ is an apocalyptic number.

155411 is a deficient number, since it is larger than the sum of its proper divisors (13069).

155411 is a wasteful number, since it uses less digits than its factorization.

155411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its digits is 100, while the sum is 17.

The square root of 155411 is about 394.2220186646. Note that the first 3 decimals coincide. The cubic root of 155411 is about 53.7642904134.

Adding to 155411 its reverse (114551), we get a palindrome (269962).

The spelling of 155411 in words is "one hundred fifty-five thousand, four hundred eleven".