20552773 has 2 divisors, whose sum is σ = 20552774. Its totient is φ = 20552772.

The previous prime is 20552759. The next prime is 20552801. The reversal of 20552773 is 37725502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 8567329 = 3462^2 + 2927^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20552773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20553773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10276386 + 10276387.

It is an arithmetic number, because the mean of its divisors is an integer number (10276387).

Almost surely, 2^20552773 is an apocalyptic number.

It is an amenable number.

20552773 is a deficient number, since it is larger than the sum of its proper divisors (1).

20552773 is an equidigital number, since it uses as much as digits as its factorization.

20552773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 20552773 is about 4533.5166261965. The cubic root of 20552773 is about 273.9198310933.

The spelling of 20552773 in words is "twenty million, five hundred fifty-two thousand, seven hundred seventy-three".