65520071 has 2 divisors, whose sum is σ = 65520072. Its totient is φ = 65520070.

The previous prime is 65520053. The next prime is 65520073. The reversal of 65520071 is 17002556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65520071 - 2¹⁴ = 65503687 is a prime.

Together with 65520073, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 65520071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65520073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32760035 + 32760036.

It is an arithmetic number, because the mean of its divisors is an integer number (32760036).

Almost surely, 2^65520071 is an apocalyptic number.

65520071 is a deficient number, since it is larger than the sum of its proper divisors (1).

65520071 is an equidigital number, since it uses as much as digits as its factorization.

65520071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 65520071 is about 8094.4469236632. The cubic root of 65520071 is about 403.1420684719.

The spelling of 65520071 in words is "sixty-five million, five hundred twenty thousand, seventy-one".