155755 has 4 divisors (see below), whose sum is σ = 186912. Its totient is φ = 124600.

The previous prime is 155747. The next prime is 155773. The reversal of 155755 is 557551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 155755 - 2³ = 155747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15571 + ... + 15580.

It is an arithmetic number, because the mean of its divisors is an integer number (46728).

2¹⁵⁵⁷⁵⁵ is an apocalyptic number.

155755 is a deficient number, since it is larger than the sum of its proper divisors (31157).

155755 is an equidigital number, since it uses as much as digits as its factorization.

155755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31156.

The product of its digits is 4375, while the sum is 28.

The square root of 155755 is about 394.6580798615. The cubic root of 155755 is about 53.8039300069.

The spelling of 155755 in words is "one hundred fifty-five thousand, seven hundred fifty-five".