66052057 has 2 divisors, whose sum is σ = 66052058. Its totient is φ = 66052056.

The previous prime is 66052033. The next prime is 66052069. The reversal of 66052057 is 75025066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43877376 + 22174681 = 6624^2 + 4709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66052057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66052097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33026028 + 33026029.

It is an arithmetic number, because the mean of its divisors is an integer number (33026029).

Almost surely, 2^66052057 is an apocalyptic number.

It is an amenable number.

66052057 is a deficient number, since it is larger than the sum of its proper divisors (1).

66052057 is an equidigital number, since it uses as much as digits as its factorization.

66052057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 66052057 is about 8127.2416599976. The cubic root of 66052057 is about 404.2302240549.

The spelling of 66052057 in words is "sixty-six million, fifty-two thousand, fifty-seven".