80545 has 8 divisors (see below), whose sum is σ = 98280. Its totient is φ = 63360.

The previous prime is 80537. The next prime is 80557. The reversal of 80545 is 54508.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2704 + 77841 = 52^2 + 279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80545 - 2³ = 80537 is a prime.

80545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355 + ... + 535.

It is an arithmetic number, because the mean of its divisors is an integer number (12285).

2⁸⁰⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

80545 is a deficient number, since it is larger than the sum of its proper divisors (17735).

80545 is a wasteful number, since it uses less digits than its factorization.

80545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 80545 is about 283.8045101826. The cubic root of 80545 is about 43.1863196852.

It can be divided in two parts, 80 and 545, that added together give a 4-th power (625 = 5⁴).

The spelling of 80545 in words is "eighty thousand, five hundred forty-five".