137117217 has 4 divisors (see below), whose sum is σ = 182822960. Its totient is φ = 91411476.

The previous prime is 137117207. The next prime is 137117231. The reversal of 137117217 is 712711731.

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 not a de Polignac number, because 137117217 - 2⁷ = 137117089 is a prime.

It is a super-2 number, since 2×137117217² = 37602262395650178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137117207) 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, 22852867 + ... + 22852872.

It is an arithmetic number, because the mean of its divisors is an integer number (45705740).

Almost surely, 2^137117217 is an apocalyptic number.

It is an amenable number.

137117217 is a deficient number, since it is larger than the sum of its proper divisors (45705743).

137117217 is an equidigital number, since it uses as much as digits as its factorization.

137117217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45705742.

The product of its digits is 2058, while the sum is 30.

The square root of 137117217 is about 11709.7061022043. The cubic root of 137117217 is about 515.6606558851.

Adding to 137117217 its reverse (712711731), we get a palindrome (849828948).

The spelling of 137117217 in words is "one hundred thirty-seven million, one hundred seventeen thousand, two hundred seventeen".