20052737 has 4 divisors (see below), whose sum is σ = 20075076. Its totient is φ = 20030400.

The previous prime is 20052719. The next prime is 20052751. The reversal of 20052737 is 73725002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2421136 + 17631601 = 1556^2 + 4199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20052737 is a prime.

It is a super-2 number, since 2×20052737² = 804224522382338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20052787) 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, 9764 + ... + 11637.

It is an arithmetic number, because the mean of its divisors is an integer number (5018769).

Almost surely, 2^20052737 is an apocalyptic number.

It is an amenable number.

20052737 is a deficient number, since it is larger than the sum of its proper divisors (22339).

20052737 is an equidigital number, since it uses as much as digits as its factorization.

20052737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22338.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 20052737 is about 4478.0282491293. The cubic root of 20052737 is about 271.6801359994.

Adding to 20052737 its reverse (73725002), we get a palindrome (93777739).

The spelling of 20052737 in words is "twenty million, fifty-two thousand, seven hundred thirty-seven".