445535081 has 2 divisors, whose sum is σ = 445535082. Its totient is φ = 445535080.

The previous prime is 445534981. The next prime is 445535087. The reversal of 445535081 is 180535544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311346025 + 134189056 = 17645^2 + 11584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445535081 is a prime.

It is a super-2 number, since 2×445535081² = 397003016803353122, which contains 22 as substring.

It is equal to p_23628752 and since 445535081 and 23628752 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (445535087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222767540 + 222767541.

It is an arithmetic number, because the mean of its divisors is an integer number (222767541).

Almost surely, 2^445535081 is an apocalyptic number.

It is an amenable number.

445535081 is a deficient number, since it is larger than the sum of its proper divisors (1).

445535081 is an equidigital number, since it uses as much as digits as its factorization.

445535081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 445535081 is about 21107.7019355495. The cubic root of 445535081 is about 763.7665520542.

The spelling of 445535081 in words is "four hundred forty-five million, five hundred thirty-five thousand, eighty-one".