80533289 has 4 divisors (see below), whose sum is σ = 81898320. Its totient is φ = 79168260.

The previous prime is 80533279. The next prime is 80533337. The reversal of 80533289 is 98233508.

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 80533289 - 2⁴ = 80533273 is a prime.

It is a super-2 number, since 2×80533289² = 12971221274315042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80533279) 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, 682427 + ... + 682544.

It is an arithmetic number, because the mean of its divisors is an integer number (20474580).

Almost surely, 2^80533289 is an apocalyptic number.

It is an amenable number.

80533289 is a deficient number, since it is larger than the sum of its proper divisors (1365031).

80533289 is a wasteful number, since it uses less digits than its factorization.

80533289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365030.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 80533289 is about 8974.0341541583. The cubic root of 80533289 is about 431.8422653020.

The spelling of 80533289 in words is "eighty million, five hundred thirty-three thousand, two hundred eighty-nine".