20526775 has 12 divisors (see below), whose sum is σ = 25515232. Its totient is φ = 16381440.

The previous prime is 20526763. The next prime is 20526811. The reversal of 20526775 is 57762502.

It is a happy number.

It is not a de Polignac number, because 20526775 - 2¹⁹ = 20002487 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20526775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13714 + ... + 15136.

Almost surely, 2^20526775 is an apocalyptic number.

20526775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20526775 is a deficient number, since it is larger than the sum of its proper divisors (4988457).

20526775 is a wasteful number, since it uses less digits than its factorization.

20526775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010 (or 2005 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 20526775 is about 4530.6484083407. The cubic root of 20526775 is about 273.8042850860.

The spelling of 20526775 in words is "twenty million, five hundred twenty-six thousand, seven hundred seventy-five".