20201137 has 4 divisors (see below), whose sum is σ = 22037616. Its totient is φ = 18364660.

The previous prime is 20201113. The next prime is 20201141. The reversal of 20201137 is 73110202.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 20201137 - 2²³ = 11812529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201137.

It is not an unprimeable number, because it can be changed into a prime (20201437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918223 + ... + 918244.

It is an arithmetic number, because the mean of its divisors is an integer number (5509404).

Almost surely, 2^20201137 is an apocalyptic number.

It is an amenable number.

20201137 is a deficient number, since it is larger than the sum of its proper divisors (1836479).

20201137 is a wasteful number, since it uses less digits than its factorization.

20201137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836478.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20201137 is about 4494.5674986588. The cubic root of 20201137 is about 272.3486778735.

Adding to 20201137 its reverse (73110202), we get a palindrome (93311339).

The spelling of 20201137 in words is "twenty million, two hundred one thousand, one hundred thirty-seven".