202102057 has 2 divisors, whose sum is σ = 202102058. Its totient is φ = 202102056.

The previous prime is 202102039. The next prime is 202102067. The reversal of 202102057 is 750201202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127780416 + 74321641 = 11304^2 + 8621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202102057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (202102067) 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, 101051028 + 101051029.

It is an arithmetic number, because the mean of its divisors is an integer number (101051029).

Almost surely, 2^202102057 is an apocalyptic number.

It is an amenable number.

202102057 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102057 is an equidigital number, since it uses as much as digits as its factorization.

202102057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 202102057 is about 14216.2603029067. The cubic root of 202102057 is about 586.8452286968.

Adding to 202102057 its reverse (750201202), we get a palindrome (952303259).

The spelling of 202102057 in words is "two hundred two million, one hundred two thousand, fifty-seven".