80551 has 4 divisors (see below), whose sum is σ = 81400. Its totient is φ = 79704.

The previous prime is 80537. The next prime is 80557. The reversal of 80551 is 15508.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 80551 - 2⁹ = 80039 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80557) 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, 261 + ... + 478.

It is an arithmetic number, because the mean of its divisors is an integer number (20350).

2⁸⁰⁵⁵¹ is an apocalyptic number.

80551 is the 180-th centered pentagonal number.

80551 is a deficient number, since it is larger than the sum of its proper divisors (849).

80551 is a wasteful number, since it uses less digits than its factorization.

80551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 80551 is about 283.8150806423. The cubic root of 80551 is about 43.1873920111.

The spelling of 80551 in words is "eighty thousand, five hundred fifty-one".