137161 has 4 divisors (see below), whose sum is σ = 144400. Its totient is φ = 129924.

The previous prime is 137153. The next prime is 137177. The reversal of 137161 is 161731.

It is a happy number.

137161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 137161 - 2³ = 137153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 7219 = 137161 / (1 + 3 + 7 + 1 + 6 + 1).

137161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (137131) 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, 3591 + ... + 3628.

It is an arithmetic number, because the mean of its divisors is an integer number (36100).

2¹³⁷¹⁶¹ is an apocalyptic number.

It is an amenable number.

137161 is a deficient number, since it is larger than the sum of its proper divisors (7239).

137161 is an equidigital number, since it uses as much as digits as its factorization.

137161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238.

The product of its digits is 126, while the sum is 19.

The square root of 137161 is about 370.3525347557. The cubic root of 137161 is about 51.5715535373.

Adding to 137161 its reverse (161731), we get a palindrome (298892).

The spelling of 137161 in words is "one hundred thirty-seven thousand, one hundred sixty-one".