20107137 has 4 divisors (see below), whose sum is σ = 26809520. Its totient is φ = 13404756.

The previous prime is 20107133. The next prime is 20107151. The reversal of 20107137 is 73170102.

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 20107137 - 2² = 20107133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20107133) 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, 3351187 + ... + 3351192.

It is an arithmetic number, because the mean of its divisors is an integer number (6702380).

Almost surely, 2^20107137 is an apocalyptic number.

It is an amenable number.

20107137 is a deficient number, since it is larger than the sum of its proper divisors (6702383).

20107137 is an equidigital number, since it uses as much as digits as its factorization.

20107137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702382.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 20107137 is about 4484.0982371041. The cubic root of 20107137 is about 271.9255896874.

Adding to 20107137 its reverse (73170102), we get a palindrome (93277239).

The spelling of 20107137 in words is "twenty million, one hundred seven thousand, one hundred thirty-seven".