20350057 has 16 divisors (see below), whose sum is σ = 25280640. Its totient is φ = 15950592.

The previous prime is 20350049. The next prime is 20350067. The reversal of 20350057 is 75005302.

It is not a de Polignac number, because 20350057 - 2³ = 20350049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20350067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9294 + ... + 11272.

It is an arithmetic number, because the mean of its divisors is an integer number (1580040).

Almost surely, 2^20350057 is an apocalyptic number.

It is an amenable number.

20350057 is a deficient number, since it is larger than the sum of its proper divisors (4930583).

20350057 is a wasteful number, since it uses less digits than its factorization.

20350057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 20350057 is about 4511.1037452047. The cubic root of 20350057 is about 273.0162790455.

Adding to 20350057 its reverse (75005302), we get a palindrome (95355359).

The spelling of 20350057 in words is "twenty million, three hundred fifty thousand, fifty-seven".