20534783 has 2 divisors, whose sum is σ = 20534784. Its totient is φ = 20534782.

The previous prime is 20534753. The next prime is 20534807. The reversal of 20534783 is 38743502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20534783 - 2⁶ = 20534719 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20534713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10267391 + 10267392.

It is an arithmetic number, because the mean of its divisors is an integer number (10267392).

Almost surely, 2^20534783 is an apocalyptic number.

20534783 is a deficient number, since it is larger than the sum of its proper divisors (1).

20534783 is an equidigital number, since it uses as much as digits as its factorization.

20534783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 20534783 is about 4531.5320808751. The cubic root of 20534783 is about 273.8398863863.

The spelling of 20534783 in words is "twenty million, five hundred thirty-four thousand, seven hundred eighty-three".