137545 has 4 divisors (see below), whose sum is σ = 165060. Its totient is φ = 110032.

The previous prime is 137537. The next prime is 137567. The reversal of 137545 is 545731.

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 24649 + 112896 = 157^2 + 336^2 .

It is a cyclic number.

It is not a de Polignac number, because 137545 - 2³ = 137537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13750 + ... + 13759.

It is an arithmetic number, because the mean of its divisors is an integer number (41265).

2¹³⁷⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

137545 is a deficient number, since it is larger than the sum of its proper divisors (27515).

137545 is an equidigital number, since it uses as much as digits as its factorization.

137545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27514.

The product of its digits is 2100, while the sum is 25.

The square root of 137545 is about 370.8705973787. The cubic root of 137545 is about 51.6196357775.

The spelling of 137545 in words is "one hundred thirty-seven thousand, five hundred forty-five".