20526469 has 2 divisors, whose sum is σ = 20526470. Its totient is φ = 20526468.

The previous prime is 20526449. The next prime is 20526503. The reversal of 20526469 is 96462502.

It is an a-pointer prime, because the next prime (20526503) can be obtained adding 20526469 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12040900 + 8485569 = 3470^2 + 2913^2 .

It is a cyclic number.

It is not a de Polignac number, because 20526469 - 2¹¹ = 20524421 is a prime.

It is a super-2 number, since 2×20526469² = 842671859215922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20526449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10263234 + 10263235.

It is an arithmetic number, because the mean of its divisors is an integer number (10263235).

Almost surely, 2^20526469 is an apocalyptic number.

It is an amenable number.

20526469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20526469 is an equidigital number, since it uses as much as digits as its factorization.

20526469 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 34.

The square root of 20526469 is about 4530.6146382141. The cubic root of 20526469 is about 273.8029245130.

The spelling of 20526469 in words is "twenty million, five hundred twenty-six thousand, four hundred sixty-nine".