65445091 has 2 divisors, whose sum is σ = 65445092. Its totient is φ = 65445090.

The previous prime is 65445073. The next prime is 65445113. The reversal of 65445091 is 19054456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65445091 - 2⁵ = 65445059 is a prime.

It is not a weakly prime, because it can be changed into another prime (65445001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32722545 + 32722546.

It is an arithmetic number, because the mean of its divisors is an integer number (32722546).

Almost surely, 2^65445091 is an apocalyptic number.

65445091 is a deficient number, since it is larger than the sum of its proper divisors (1).

65445091 is an equidigital number, since it uses as much as digits as its factorization.

65445091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 65445091 is about 8089.8140275287. The cubic root of 65445091 is about 402.9882269095.

The spelling of 65445091 in words is "sixty-five million, four hundred forty-five thousand, ninety-one".