80511 has 8 divisors (see below), whose sum is σ = 109824. Its totient is φ = 52440.

The previous prime is 80491. The next prime is 80513. The reversal of 80511 is 11508.

It is a happy number.

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

It is not a de Polignac number, because 80511 - 2⁶ = 80447 is a prime.

It is a super-2 number, since 2×80511² = 12964042242, which contains 22 as substring.

It is a nialpdrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 80511.

It is not an unprimeable number, because it can be changed into a prime (80513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145 + ... + 426.

It is an arithmetic number, because the mean of its divisors is an integer number (13728).

2⁸⁰⁵¹¹ is an apocalyptic number.

80511 is a deficient number, since it is larger than the sum of its proper divisors (29313).

80511 is a wasteful number, since it uses less digits than its factorization.

80511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 80511 is about 283.7446034729. The cubic root of 80511 is about 43.1802421653.

The spelling of 80511 in words is "eighty thousand, five hundred eleven".