20655241 has 2 divisors, whose sum is σ = 20655242. Its totient is φ = 20655240.

The previous prime is 20655227. The next prime is 20655259. The reversal of 20655241 is 14255602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 4687225 = 3996^2 + 2165^2 .

It is a cyclic number.

It is not a de Polignac number, because 20655241 - 2¹³ = 20647049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20655941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10327620 + 10327621.

It is an arithmetic number, because the mean of its divisors is an integer number (10327621).

Almost surely, 2^20655241 is an apocalyptic number.

It is an amenable number.

20655241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20655241 is an equidigital number, since it uses as much as digits as its factorization.

20655241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 20655241 is about 4544.8037361365. The cubic root of 20655241 is about 274.3742953267.

The spelling of 20655241 in words is "twenty million, six hundred fifty-five thousand, two hundred forty-one".