20041537 has 2 divisors, whose sum is σ = 20041538. Its totient is φ = 20041536.

The previous prime is 20041517. The next prime is 20041573. The reversal of 20041537 is 73514002.

Together with next prime (20041573) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13771521 + 6270016 = 3711^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 20041537 - 2²³ = 11652929 is a prime.

It is not a weakly prime, because it can be changed into another prime (20041507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020768 + 10020769.

It is an arithmetic number, because the mean of its divisors is an integer number (10020769).

Almost surely, 2^20041537 is an apocalyptic number.

It is an amenable number.

20041537 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041537 is an equidigital number, since it uses as much as digits as its factorization.

20041537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20041537 is about 4476.7775240680. Note that the first 3 decimals coincide. The cubic root of 20041537 is about 271.6295463268.

Adding to 20041537 its reverse (73514002), we get a palindrome (93555539).

The spelling of 20041537 in words is "twenty million, forty-one thousand, five hundred thirty-seven".