20526829 has 2 divisors, whose sum is σ = 20526830. Its totient is φ = 20526828.

The previous prime is 20526811. The next prime is 20526841. The reversal of 20526829 is 92862502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20520900 + 5929 = 4530^2 + 77^2 .

It is a cyclic number.

It is not a de Polignac number, because 20526829 - 2¹³ = 20518637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20526794 and 20526803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20526889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10263414 + 10263415.

It is an arithmetic number, because the mean of its divisors is an integer number (10263415).

Almost surely, 2^20526829 is an apocalyptic number.

It is an amenable number.

20526829 is a deficient number, since it is larger than the sum of its proper divisors (1).

20526829 is an equidigital number, since it uses as much as digits as its factorization.

20526829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20526829 is about 4530.6543677487. The cubic root of 20526829 is about 273.8045251857.

It can be divided in two parts, 205 and 26829, that multiplied together give a palindrome (5499945).

The spelling of 20526829 in words is "twenty million, five hundred twenty-six thousand, eight hundred twenty-nine".