65257147 has 2 divisors, whose sum is σ = 65257148. Its totient is φ = 65257146.

The previous prime is 65257133. The next prime is 65257223. The reversal of 65257147 is 74175256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65257147 - 2⁷ = 65257019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65257847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32628573 + 32628574.

It is an arithmetic number, because the mean of its divisors is an integer number (32628574).

Almost surely, 2^65257147 is an apocalyptic number.

65257147 is a deficient number, since it is larger than the sum of its proper divisors (1).

65257147 is an equidigital number, since it uses as much as digits as its factorization.

65257147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 37.

The square root of 65257147 is about 8078.1895867824. The cubic root of 65257147 is about 402.6020923336.

The spelling of 65257147 in words is "sixty-five million, two hundred fifty-seven thousand, one hundred forty-seven".