137465161 has 4 divisors (see below), whose sum is σ = 137507524. Its totient is φ = 137422800.

The previous prime is 137465149. The next prime is 137465189. The reversal of 137465161 is 161564731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161564731 = 439 ⋅368029.

It can be written as a sum of positive squares in 2 ways, for example, as 70879561 + 66585600 = 8419^2 + 8160^2 .

It is a cyclic number.

It is not a de Polignac number, because 137465161 - 2⁷ = 137465033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137465131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15870 + ... + 22951.

It is an arithmetic number, because the mean of its divisors is an integer number (34376881).

Almost surely, 2^137465161 is an apocalyptic number.

It is an amenable number.

137465161 is a deficient number, since it is larger than the sum of its proper divisors (42363).

137465161 is an equidigital number, since it uses as much as digits as its factorization.

137465161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42362.

The product of its digits is 15120, while the sum is 34.

The square root of 137465161 is about 11724.5537654957. The cubic root of 137465161 is about 516.0964617951.

The spelling of 137465161 in words is "one hundred thirty-seven million, four hundred sixty-five thousand, one hundred sixty-one".