80275609 has 2 divisors, whose sum is σ = 80275610. Its totient is φ = 80275608.

The previous prime is 80275579. The next prime is 80275661. The reversal of 80275609 is 90657208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61544025 + 18731584 = 7845^2 + 4328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80275609 is a prime.

It is not a weakly prime, because it can be changed into another prime (80275669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40137804 + 40137805.

It is an arithmetic number, because the mean of its divisors is an integer number (40137805).

Almost surely, 2^80275609 is an apocalyptic number.

It is an amenable number.

80275609 is a deficient number, since it is larger than the sum of its proper divisors (1).

80275609 is an equidigital number, since it uses as much as digits as its factorization.

80275609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 80275609 is about 8959.6656745662. The cubic root of 80275609 is about 431.3811888490.

The spelling of 80275609 in words is "eighty million, two hundred seventy-five thousand, six hundred nine".