20522783 has 2 divisors, whose sum is σ = 20522784. Its totient is φ = 20522782.

The previous prime is 20522773. The next prime is 20522849. The reversal of 20522783 is 38722502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20522783 - 2⁴ = 20522767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20522743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261391 + 10261392.

It is an arithmetic number, because the mean of its divisors is an integer number (10261392).

Almost surely, 2^20522783 is an apocalyptic number.

20522783 is a deficient number, since it is larger than the sum of its proper divisors (1).

20522783 is an equidigital number, since it uses as much as digits as its factorization.

20522783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20522783 is about 4530.2078318770. The cubic root of 20522783 is about 273.7865343259.

The spelling of 20522783 in words is "twenty million, five hundred twenty-two thousand, seven hundred eighty-three".