80333521 has 4 divisors (see below), whose sum is σ = 80911600. Its totient is φ = 79755444.

The previous prime is 80333489. The next prime is 80333537. The reversal of 80333521 is 12533308.

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 80333521 - 2⁵ = 80333489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80333321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288831 + ... + 289108.

It is an arithmetic number, because the mean of its divisors is an integer number (20227900).

Almost surely, 2^80333521 is an apocalyptic number.

It is an amenable number.

80333521 is a deficient number, since it is larger than the sum of its proper divisors (578079).

80333521 is a wasteful number, since it uses less digits than its factorization.

80333521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578078.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 80333521 is about 8962.8969089240. The cubic root of 80333521 is about 431.4848988161.

Adding to 80333521 its reverse (12533308), we get a palindrome (92866829).

The spelling of 80333521 in words is "eighty million, three hundred thirty-three thousand, five hundred twenty-one".