137285 has 4 divisors (see below), whose sum is σ = 164748. Its totient is φ = 109824.

The previous prime is 137279. The next prime is 137303. The reversal of 137285 is 582731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23716 + 113569 = 154^2 + 337^2 .

It is a cyclic number.

It is not a de Polignac number, because 137285 - 2⁸ = 137029 is a prime.

It is a Duffinian number.

It is a congruent 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, 13724 + ... + 13733.

It is an arithmetic number, because the mean of its divisors is an integer number (41187).

2¹³⁷²⁸⁵ is an apocalyptic number.

It is an amenable number.

137285 is a deficient number, since it is larger than the sum of its proper divisors (27463).

137285 is an equidigital number, since it uses as much as digits as its factorization.

137285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27462.

The product of its digits is 1680, while the sum is 26.

The square root of 137285 is about 370.5199049984. The cubic root of 137285 is about 51.5870898936.

The spelling of 137285 in words is "one hundred thirty-seven thousand, two hundred eighty-five".