155727 has 24 divisors (see below), whose sum is σ = 266448. Its totient is φ = 87120.

The previous prime is 155723. The next prime is 155731. The reversal of 155727 is 727551.

It is an interprime number because it is at equal distance from previous prime (155723) and next prime (155731).

It is not a de Polignac number, because 155727 - 2² = 155723 is a prime.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 155727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11973 + ... + 11985.

It is an arithmetic number, because the mean of its divisors is an integer number (11102).

2¹⁵⁵⁷²⁷ is an apocalyptic number.

155727 is a deficient number, since it is larger than the sum of its proper divisors (110721).

155727 is a wasteful number, since it uses less digits than its factorization.

155727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52 (or 27 counting only the distinct ones).

The product of its digits is 2450, while the sum is 27.

The square root of 155727 is about 394.6226045223. The cubic root of 155727 is about 53.8007057116.

It can be divided in two parts, 15 and 5727, that multiplied together give a triangular number (85905 = T₄₁₄).

The spelling of 155727 in words is "one hundred fifty-five thousand, seven hundred twenty-seven".