65660051 has 2 divisors, whose sum is σ = 65660052. Its totient is φ = 65660050.

The previous prime is 65660047. The next prime is 65660053. The reversal of 65660051 is 15006656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65660051 - 2² = 65660047 is a prime.

It is a super-2 number, since 2×65660051² = 8622484594645202, which contains 22 as substring.

Together with 65660053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65659996 and 65660023.

It is not a weakly prime, because it can be changed into another prime (65660053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32830025 + 32830026.

It is an arithmetic number, because the mean of its divisors is an integer number (32830026).

Almost surely, 2^65660051 is an apocalyptic number.

65660051 is a deficient number, since it is larger than the sum of its proper divisors (1).

65660051 is an equidigital number, since it uses as much as digits as its factorization.

65660051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 65660051 is about 8103.0889789018. The cubic root of 65660051 is about 403.4289611532.

The spelling of 65660051 in words is "sixty-five million, six hundred sixty thousand, fifty-one".