137081 has 4 divisors (see below), whose sum is σ = 156672. Its totient is φ = 117492.

The previous prime is 137077. The next prime is 137087. The reversal of 137081 is 180731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137081 - 2² = 137077 is a prime.

It is a super-2 number, since 2×137081² = 37582401122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (137087) 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, 9785 + ... + 9798.

It is an arithmetic number, because the mean of its divisors is an integer number (39168).

2¹³⁷⁰⁸¹ is an apocalyptic number.

It is an amenable number.

137081 is a deficient number, since it is larger than the sum of its proper divisors (19591).

137081 is an equidigital number, since it uses as much as digits as its factorization.

137081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19590.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 137081 is about 370.2445138014. The cubic root of 137081 is about 51.5615251117.

The spelling of 137081 in words is "one hundred thirty-seven thousand, eighty-one".