80386521 has 8 divisors (see below), whose sum is σ = 110878080. Its totient is φ = 51742992.

The previous prime is 80386517. The next prime is 80386577. The reversal of 80386521 is 12568308.

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 80386521 - 2² = 80386517 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80387521) 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, 461905 + ... + 462078.

It is an arithmetic number, because the mean of its divisors is an integer number (13859760).

Almost surely, 2^80386521 is an apocalyptic number.

It is an amenable number.

80386521 is a deficient number, since it is larger than the sum of its proper divisors (30491559).

80386521 is a wasteful number, since it uses less digits than its factorization.

80386521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924015.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 80386521 is about 8965.8530547851. The cubic root of 80386521 is about 431.5797686040.

The spelling of 80386521 in words is "eighty million, three hundred eighty-six thousand, five hundred twenty-one".