137520165 has 8 divisors (see below), whose sum is σ = 220032288. Its totient is φ = 73344080.

The previous prime is 137520161. The next prime is 137520179. The reversal of 137520165 is 561025731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 137520165 - 2² = 137520161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137520161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4583991 + ... + 4584020.

It is an arithmetic number, because the mean of its divisors is an integer number (27504036).

Almost surely, 2^137520165 is an apocalyptic number.

137520165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137520165 is a deficient number, since it is larger than the sum of its proper divisors (82512123).

137520165 is an equidigital number, since it uses as much as digits as its factorization.

137520165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9168019.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 137520165 is about 11726.8992065251. The cubic root of 137520165 is about 516.1652879234.

Adding to 137520165 its reverse (561025731), we get a palindrome (698545896).

The spelling of 137520165 in words is "one hundred thirty-seven million, five hundred twenty thousand, one hundred sixty-five".