65526491 has 2 divisors, whose sum is σ = 65526492. Its totient is φ = 65526490.

The previous prime is 65526481. The next prime is 65526499. The reversal of 65526491 is 19462556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65526491 - 2¹⁸ = 65264347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65526499) 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, 32763245 + 32763246.

It is an arithmetic number, because the mean of its divisors is an integer number (32763246).

Almost surely, 2^65526491 is an apocalyptic number.

65526491 is a deficient number, since it is larger than the sum of its proper divisors (1).

65526491 is an equidigital number, since it uses as much as digits as its factorization.

65526491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 65526491 is about 8094.8434821187. The cubic root of 65526491 is about 403.1552353662.

The spelling of 65526491 in words is "sixty-five million, five hundred twenty-six thousand, four hundred ninety-one".