20000537 has 2 divisors, whose sum is σ = 20000538. Its totient is φ = 20000536.

The previous prime is 20000531. The next prime is 20000543. The reversal of 20000537 is 73500002.

It is a balanced prime because it is at equal distance from previous prime (20000531) and next prime (20000543).

It can be written as a sum of positive squares in only one way, i.e., 12222016 + 7778521 = 3496^2 + 2789^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000537 - 2¹² = 19996441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20000531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000268 + 10000269.

It is an arithmetic number, because the mean of its divisors is an integer number (10000269).

Almost surely, 2^20000537 is an apocalyptic number.

It is an amenable number.

20000537 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000537 is an equidigital number, since it uses as much as digits as its factorization.

20000537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 20000537 is about 4472.1959930218. The cubic root of 20000537 is about 271.4441910415. Note that the first 3 decimals are identical.

Adding to 20000537 its reverse (73500002), we get a palindrome (93500539).

The spelling of 20000537 in words is "twenty million, five hundred thirty-seven", and thus it is an aban number.