155485 has 12 divisors (see below), whose sum is σ = 205884. Its totient is φ = 112640.

The previous prime is 155473. The next prime is 155501. The reversal of 155485 is 584551.

155485 = T₄₆ + T₄₇ + ... + T₁₀₀.

It can be written as a sum of positive squares in 2 ways, for example, as 116281 + 39204 = 341^2 + 198^2 .

It is not a de Polignac number, because 155485 - 2⁵ = 155453 is a prime.

It is a Duffinian number.

155485 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (17157).

2¹⁵⁵⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

155485 is a deficient number, since it is larger than the sum of its proper divisors (50399).

155485 is a wasteful number, since it uses less digits than its factorization.

155485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 273 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 155485 is about 394.3158632366. The cubic root of 155485 is about 53.7728224696.

The spelling of 155485 in words is "one hundred fifty-five thousand, four hundred eighty-five".