80771549 has 4 divisors (see below), whose sum is σ = 81093600. Its totient is φ = 80449500.

The previous prime is 80771519. The next prime is 80771557. The reversal of 80771549 is 94517708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80771549 - 2¹⁶ = 80706013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80771519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160649 + ... + 161150.

It is an arithmetic number, because the mean of its divisors is an integer number (20273400).

Almost surely, 2^80771549 is an apocalyptic number.

It is an amenable number.

80771549 is a deficient number, since it is larger than the sum of its proper divisors (322051).

80771549 is a wasteful number, since it uses less digits than its factorization.

80771549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322050.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 80771549 is about 8987.2993162574. The cubic root of 80771549 is about 432.2677185006.

The spelling of 80771549 in words is "eighty million, seven hundred seventy-one thousand, five hundred forty-nine".