20355011 has 2 divisors, whose sum is σ = 20355012. Its totient is φ = 20355010.

The previous prime is 20354993. The next prime is 20355019. The reversal of 20355011 is 11055302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20355011 - 2¹⁴ = 20338627 is a prime.

It is not a weakly prime, because it can be changed into another prime (20355019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177505 + 10177506.

It is an arithmetic number, because the mean of its divisors is an integer number (10177506).

Almost surely, 2^20355011 is an apocalyptic number.

20355011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20355011 is an equidigital number, since it uses as much as digits as its factorization.

20355011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 20355011 is about 4511.6528013578. The cubic root of 20355011 is about 273.0384315291.

The spelling of 20355011 in words is "twenty million, three hundred fifty-five thousand, eleven".