20350559 has 2 divisors, whose sum is σ = 20350560. Its totient is φ = 20350558.

The previous prime is 20350541. The next prime is 20350597. The reversal of 20350559 is 95505302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20350559 - 2¹² = 20346463 is a prime.

It is a super-2 number, since 2×20350559² = 828290503224962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20353559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10175279 + 10175280.

It is an arithmetic number, because the mean of its divisors is an integer number (10175280).

Almost surely, 2^20350559 is an apocalyptic number.

20350559 is a deficient number, since it is larger than the sum of its proper divisors (1).

20350559 is an equidigital number, since it uses as much as digits as its factorization.

20350559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 20350559 is about 4511.1593853465. The cubic root of 20350559 is about 273.0185239704.

The spelling of 20350559 in words is "twenty million, three hundred fifty thousand, five hundred fifty-nine".