80353721 has 8 divisors (see below), whose sum is σ = 91930944. Its totient is φ = 68801040.

The previous prime is 80353709. The next prime is 80353759. The reversal of 80353721 is 12735308.

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

It is a de Polignac number, because none of the positive numbers 2^k-80353721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80353121) 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 7 ways as a sum of consecutive naturals, for example, 1526 + ... + 12768.

It is an arithmetic number, because the mean of its divisors is an integer number (11491368).

Almost surely, 2^80353721 is an apocalyptic number.

It is an amenable number.

80353721 is a deficient number, since it is larger than the sum of its proper divisors (11577223).

80353721 is a wasteful number, since it uses less digits than its factorization.

80353721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12271.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 80353721 is about 8964.0237059035. The cubic root of 80353721 is about 431.5210616549.

The spelling of 80353721 in words is "eighty million, three hundred fifty-three thousand, seven hundred twenty-one".