20137037 has 4 divisors (see below), whose sum is σ = 20146140. Its totient is φ = 20127936.

The previous prime is 20137003. The next prime is 20137043. The reversal of 20137037 is 73073102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 73073102 = 2 ⋅36536551.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 18913801 = 1106^2 + 4349^2 .

It is a cyclic number.

It is not a de Polignac number, because 20137037 - 2⁶ = 20136973 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20137057) 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, 1139 + ... + 6447.

It is an arithmetic number, because the mean of its divisors is an integer number (5036535).

Almost surely, 2^20137037 is an apocalyptic number.

It is an amenable number.

20137037 is a deficient number, since it is larger than the sum of its proper divisors (9103).

20137037 is an equidigital number, since it uses as much as digits as its factorization.

20137037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9102.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 20137037 is about 4487.4310022551. The cubic root of 20137037 is about 272.0603104802.

The spelling of 20137037 in words is "twenty million, one hundred thirty-seven thousand, thirty-seven".