65355491 has 2 divisors, whose sum is σ = 65355492. Its totient is φ = 65355490.

The previous prime is 65355487. The next prime is 65355523. The reversal of 65355491 is 19455356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65355491 - 2² = 65355487 is a prime.

It is not a weakly prime, because it can be changed into another prime (65355401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32677745 + 32677746.

It is an arithmetic number, because the mean of its divisors is an integer number (32677746).

Almost surely, 2^65355491 is an apocalyptic number.

65355491 is a deficient number, since it is larger than the sum of its proper divisors (1).

65355491 is an equidigital number, since it uses as much as digits as its factorization.

65355491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 38.

The square root of 65355491 is about 8084.2743026199. The cubic root of 65355491 is about 402.8042343169.

The spelling of 65355491 in words is "sixty-five million, three hundred fifty-five thousand, four hundred ninety-one".