80098561 has 2 divisors, whose sum is σ = 80098562. Its totient is φ = 80098560.

The previous prime is 80098553. The next prime is 80098583. The reversal of 80098561 is 16589008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68161536 + 11937025 = 8256^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 80098561 - 2³ = 80098553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80098561.

It is not a weakly prime, because it can be changed into another prime (80098511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40049280 + 40049281.

It is an arithmetic number, because the mean of its divisors is an integer number (40049281).

Almost surely, 2^80098561 is an apocalyptic number.

It is an amenable number.

80098561 is a deficient number, since it is larger than the sum of its proper divisors (1).

80098561 is an equidigital number, since it uses as much as digits as its factorization.

80098561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 80098561 is about 8949.7799414287. The cubic root of 80098561 is about 431.0638180847.

The spelling of 80098561 in words is "eighty million, ninety-eight thousand, five hundred sixty-one".