80521790 has 8 divisors (see below), whose sum is σ = 144939240. Its totient is φ = 32208712.

The previous prime is 80521789. The next prime is 80521799. The reversal of 80521790 is 9712508.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80521799) 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, 4026080 + ... + 4026099.

It is an arithmetic number, because the mean of its divisors is an integer number (18117405).

Almost surely, 2^80521790 is an apocalyptic number.

80521790 is a deficient number, since it is larger than the sum of its proper divisors (64417450).

80521790 is a wasteful number, since it uses less digits than its factorization.

80521790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052186.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 80521790 is about 8973.3934495262. The cubic root of 80521790 is about 431.8217106939.

The spelling of 80521790 in words is "eighty million, five hundred twenty-one thousand, seven hundred ninety".