137481 has 4 divisors (see below), whose sum is σ = 183312. Its totient is φ = 91652.

The previous prime is 137477. The next prime is 137483. The reversal of 137481 is 184731.

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 137481 - 2² = 137477 is a prime.

It is a super-2 number, since 2×137481² = 37802050722, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (137483) 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, 22911 + ... + 22916.

It is an arithmetic number, because the mean of its divisors is an integer number (45828).

2¹³⁷⁴⁸¹ is an apocalyptic number.

It is an amenable number.

137481 is a deficient number, since it is larger than the sum of its proper divisors (45831).

137481 is an equidigital number, since it uses as much as digits as its factorization.

137481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45830.

The product of its digits is 672, while the sum is 24.

The square root of 137481 is about 370.7843038749. The cubic root of 137481 is about 51.6116282909.

The spelling of 137481 in words is "one hundred thirty-seven thousand, four hundred eighty-one".