155105 has 8 divisors (see below), whose sum is σ = 189312. Its totient is φ = 121968.

The previous prime is 155087. The next prime is 155119. The reversal of 155105 is 501551.

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 155105 - 2⁸ = 154849 is a prime.

It is a super-2 number, since 2×155105² = 48115122050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 9.

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, 104 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (23664).

2¹⁵⁵¹⁰⁵ is an apocalyptic number.

It is an amenable number.

155105 is a deficient number, since it is larger than the sum of its proper divisors (34207).

155105 is an equidigital number, since it uses as much as digits as its factorization.

155105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 155105 is about 393.8337212581. The cubic root of 155105 is about 53.7289804236.

Adding to 155105 its reverse (501551), we get a palindrome (656656).

The spelling of 155105 in words is "one hundred fifty-five thousand, one hundred five".