137047 has 4 divisors (see below), whose sum is σ = 144280. Its totient is φ = 129816.

The previous prime is 137029. The next prime is 137077. The reversal of 137047 is 740731.

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

It is a cyclic number.

It is not a de Polignac number, because 137047 - 2¹¹ = 134999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3588 + ... + 3625.

It is an arithmetic number, because the mean of its divisors is an integer number (36070).

2¹³⁷⁰⁴⁷ is an apocalyptic number.

137047 is a deficient number, since it is larger than the sum of its proper divisors (7233).

137047 is an equidigital number, since it uses as much as digits as its factorization.

137047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7232.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 137047 is about 370.1985953512. The cubic root of 137047 is about 51.5572618493.

Adding to 137047 its reverse (740731), we get a palindrome (877778).

The spelling of 137047 in words is "one hundred thirty-seven thousand, forty-seven".