155655 has 16 divisors (see below), whose sum is σ = 276960. Its totient is φ = 82944.

The previous prime is 155653. The next prime is 155657. The reversal of 155655 is 556551.

155655 is a `hidden beast` number, since 1 + 5 + 5 + 655 = 666.

It is an interprime number because it is at equal distance from previous prime (155653) and next prime (155657).

It is not a de Polignac number, because 155655 - 2¹ = 155653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155653) 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, 442 + ... + 711.

It is an arithmetic number, because the mean of its divisors is an integer number (17310).

2¹⁵⁵⁶⁵⁵ is an apocalyptic number.

155655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155655 is a deficient number, since it is larger than the sum of its proper divisors (121305).

155655 is a wasteful number, since it uses less digits than its factorization.

155655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1161 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 155655 is about 394.5313675742. The cubic root of 155655 is about 53.7924128916.

The spelling of 155655 in words is "one hundred fifty-five thousand, six hundred fifty-five".