20526893 has 2 divisors, whose sum is σ = 20526894. Its totient is φ = 20526892.

The previous prime is 20526889. The next prime is 20526907. The reversal of 20526893 is 39862502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16024009 + 4502884 = 4003^2 + 2122^2 .

It is a cyclic number.

It is not a de Polignac number, because 20526893 - 2² = 20526889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20526193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10263446 + 10263447.

It is an arithmetic number, because the mean of its divisors is an integer number (10263447).

Almost surely, 2^20526893 is an apocalyptic number.

It is an amenable number.

20526893 is a deficient number, since it is larger than the sum of its proper divisors (1).

20526893 is an equidigital number, since it uses as much as digits as its factorization.

20526893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 20526893 is about 4530.6614307405. The cubic root of 20526893 is about 273.8048097477.

The spelling of 20526893 in words is "twenty million, five hundred twenty-six thousand, eight hundred ninety-three".