220138057 has 2 divisors, whose sum is σ = 220138058. Its totient is φ = 220138056.

The previous prime is 220138019. The next prime is 220138063. The reversal of 220138057 is 750831022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202464441 + 17673616 = 14229^2 + 4204^2 .

It is a cyclic number.

It is not a de Polignac number, because 220138057 - 2²³ = 211749449 is a prime.

It is not a weakly prime, because it can be changed into another prime (220138007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110069028 + 110069029.

It is an arithmetic number, because the mean of its divisors is an integer number (110069029).

Almost surely, 2^220138057 is an apocalyptic number.

It is an amenable number.

220138057 is a deficient number, since it is larger than the sum of its proper divisors (1).

220138057 is an equidigital number, since it uses as much as digits as its factorization.

220138057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 220138057 is about 14837.0501448233. The cubic root of 220138057 is about 603.8073236354.

Adding to 220138057 its reverse (750831022), we get a palindrome (970969079).

The spelling of 220138057 in words is "two hundred twenty million, one hundred thirty-eight thousand, fifty-seven".